diff --git a/analysis/examples/larger-project/rescript.json b/analysis/examples/larger-project/rescript.json
index 0fa33bdec8..86eaad4ef6 100644
--- a/analysis/examples/larger-project/rescript.json
+++ b/analysis/examples/larger-project/rescript.json
@@ -14,7 +14,7 @@
     }
   ],
   "package-specs": {
-    "module": "es6",
+    "module": "esmodule",
     "in-source": true
   }
 }
diff --git a/analysis/examples/workspace-project/rescript.json b/analysis/examples/workspace-project/rescript.json
index 483c535f85..d950142615 100644
--- a/analysis/examples/workspace-project/rescript.json
+++ b/analysis/examples/workspace-project/rescript.json
@@ -3,7 +3,7 @@
   "version": "0.1.0",
   "sources": [],
   "package-specs": {
-    "module": "es6",
+    "module": "esmodule",
     "in-source": true
   },
   "suffix": ".mjs",
diff --git a/compiler/bsb/bsb_config.ml b/compiler/bsb/bsb_config.ml
index 6a1f586f98..66c7bccaeb 100644
--- a/compiler/bsb/bsb_config.ml
+++ b/compiler/bsb/bsb_config.ml
@@ -25,17 +25,15 @@ let ( // ) = Ext_path.combine
 
 let lib_lit = "lib"
 
-let lib_js = lib_lit // "js"
-
 let lib_ocaml = lib_lit // "ocaml"
 
 let lib_bs = lib_lit // "bs"
 
-let lib_es6 = lib_lit // "es6"
+let lib_commonjs = lib_lit // "js"
 
-let lib_es6_global = lib_lit // "es6_global"
+let lib_esmodule = lib_lit // "es6"
 
-let all_lib_artifacts = [lib_js; lib_ocaml; lib_bs; lib_es6; lib_es6_global]
+let all_lib_artifacts = [lib_ocaml; lib_bs; lib_commonjs; lib_esmodule]
 
 let rev_lib_bs = ".." // ".."
 
@@ -50,14 +48,12 @@ let lib_bs_prefix_of_format (x : Ext_module_system.t) =
   match x with
   | Commonjs -> "js"
   | Esmodule -> "es6"
-  | Es6_global -> "es6_global"
 
-(* lib/js, lib/es6, lib/es6_global *)
+(* lib/js, lib/es6 *)
 let top_prefix_of_format (x : Ext_module_system.t) =
   match x with
-  | Commonjs -> lib_js
-  | Esmodule -> lib_es6
-  | Es6_global -> lib_es6_global
+  | Commonjs -> lib_commonjs
+  | Esmodule -> lib_esmodule
 
 let rev_lib_bs_prefix p = rev_lib_bs // p
 
diff --git a/compiler/bsb/bsb_config.mli b/compiler/bsb/bsb_config.mli
index bcd6104c9a..611bcdd20b 100644
--- a/compiler/bsb/bsb_config.mli
+++ b/compiler/bsb/bsb_config.mli
@@ -28,13 +28,11 @@ val proj_rel : string -> string
 
 val lib_lit : string
 
-val lib_js : string
-
 val lib_bs : string
 
-val lib_es6 : string [@@ocaml.deprecated "will be removed in v12"]
+val lib_commonjs : string
 
-val lib_es6_global : string [@@ocaml.deprecated "will be removed in v12"]
+val lib_esmodule : string
 
 val lib_ocaml : string
 
diff --git a/compiler/bsb/bsb_package_specs.ml b/compiler/bsb/bsb_package_specs.ml
index eaf4ccee02..1d4a77f54c 100644
--- a/compiler/bsb/bsb_package_specs.ml
+++ b/compiler/bsb/bsb_package_specs.ml
@@ -44,26 +44,15 @@ let bad_module_format_message_exn ~loc format =
     format Literals.esmodule Literals.commonjs
 
 let supported_format (x : string) loc : Ext_module_system.t =
-  let _ =
-    if x = Literals.es6 || x = Literals.es6_global then
-      let loc_end =
-        {loc with Lexing.pos_cnum = loc.Lexing.pos_cnum + String.length x}
-      in
-      let loc = {Warnings.loc_start = loc; loc_end; loc_ghost = false} in
-      Location.deprecated ~can_be_automigrated:false loc
-        (Printf.sprintf "Option \"%s\" is deprecated. Use \"%s\" instead." x
-           Literals.esmodule)
-  in
-  if x = Literals.es6 || x = Literals.esmodule then Esmodule
-  else if x = Literals.commonjs then Commonjs
-  else if x = Literals.es6_global then Es6_global
-  else bad_module_format_message_exn ~loc x
+  match x with
+  | x when x = Literals.esmodule -> Esmodule
+  | x when x = Literals.commonjs -> Commonjs
+  | _ -> bad_module_format_message_exn ~loc x
 
 let string_of_format (x : Ext_module_system.t) =
   match x with
   | Commonjs -> Literals.commonjs
   | Esmodule -> Literals.esmodule
-  | Es6_global -> Literals.es6_global
 
 let js_suffix_regexp = Str.regexp "[A-Za-z0-9-_.]*\\.[cm]?js"
 
diff --git a/compiler/core/js_dump_import_export.ml b/compiler/core/js_dump_import_export.ml
index c9a017802b..631463b05e 100644
--- a/compiler/core/js_dump_import_export.ml
+++ b/compiler/core/js_dump_import_export.ml
@@ -68,8 +68,8 @@ let exports cxt f (idents : Ident.t list) =
     (fun _ -> P.newline f);
   outer_cxt
 
-(** Print module in ES6 format, it is ES6, trailing comma is valid ES6 code *)
-let es6_export cxt f (idents : Ident.t list) =
+(** Print module in ESModule format, it is ESModule, trailing comma is valid ES code *)
+let esmodule_export cxt f (idents : Ident.t list) =
   P.at_least_two_lines f;
   match idents with
   | [] -> cxt
diff --git a/compiler/core/js_dump_import_export.mli b/compiler/core/js_dump_import_export.mli
index db700a82ae..9a94e3bf19 100644
--- a/compiler/core/js_dump_import_export.mli
+++ b/compiler/core/js_dump_import_export.mli
@@ -26,7 +26,8 @@ val default_export : string
 
 val exports : Ext_pp_scope.t -> Ext_pp.t -> Ident.t list -> Ext_pp_scope.t
 
-val es6_export : Ext_pp_scope.t -> Ext_pp.t -> Ident.t list -> Ext_pp_scope.t
+val esmodule_export :
+  Ext_pp_scope.t -> Ext_pp.t -> Ident.t list -> Ext_pp_scope.t
 
 val requires :
   string ->
diff --git a/compiler/core/js_dump_program.ml b/compiler/core/js_dump_program.ml
index 0a35bdc26a..33675ed5b9 100644
--- a/compiler/core/js_dump_program.ml
+++ b/compiler/core/js_dump_program.ml
@@ -70,7 +70,7 @@ let[@inline] is_default (x : Js_op.kind) =
   | External {default} -> default
   | _ -> false
 
-let node_program ~output_dir f (x : J.deps_program) =
+let commonjs_program ~output_dir f (x : J.deps_program) =
   P.string f L.strict_directive;
   P.newline f;
   let cxt =
@@ -87,7 +87,7 @@ let node_program ~output_dir f (x : J.deps_program) =
   in
   program f cxt x.program
 
-let es6_program ~output_dir fmt f (x : J.deps_program) =
+let esmodule_program ~output_dir fmt f (x : J.deps_program) =
   let cxt =
     Js_dump_import_export.imports Ext_pp_scope.empty f
       (* Not be emitted in import statements *)
@@ -105,7 +105,7 @@ let es6_program ~output_dir fmt f (x : J.deps_program) =
   in
   let () = P.at_least_two_lines f in
   let cxt = Js_dump.statements true cxt f x.program.block in
-  Js_dump_import_export.es6_export cxt f x.program.exports
+  Js_dump_import_export.esmodule_export cxt f x.program.exports
 
 let pp_deps_program ~(output_prefix : string)
     (kind : Js_packages_info.module_system) (program : J.deps_program)
@@ -128,8 +128,8 @@ let pp_deps_program ~(output_prefix : string)
     let output_dir = Filename.dirname output_prefix in
     ignore
       (match kind with
-      | Esmodule | Es6_global -> es6_program ~output_dir kind f program
-      | Commonjs -> node_program ~output_dir f program);
+      | Esmodule -> esmodule_program ~output_dir kind f program
+      | Commonjs -> commonjs_program ~output_dir f program);
     P.newline f;
     P.string f
       (match program.side_effect with
diff --git a/compiler/core/js_name_of_module_id.ml b/compiler/core/js_name_of_module_id.ml
index 1d6f30190c..e1567eee20 100644
--- a/compiler/core/js_name_of_module_id.ml
+++ b/compiler/core/js_name_of_module_id.ml
@@ -76,26 +76,7 @@ let get_runtime_module_path
             which is guaranteed by [-bs-package-output]
         *)
     else  
-      match module_system with 
-      | Commonjs | Esmodule -> 
-        Js_packages_info.runtime_package_path module_system js_file              
-      (* Note we did a post-processing when working on Windows *)
-      | Es6_global 
-        -> 
-        (* lib/ocaml/xx.cmj --               
-            HACKING: FIXME
-            maybe we can caching relative package path calculation or employ package map *)
-        (* assert false  *)
-        Ext_path.rel_normalized_absolute_path              
-          ~from:(
-            Js_packages_info.get_output_dir 
-              current_package_info
-              ~package_dir:(Lazy.force Ext_path.package_dir)
-              module_system )
-          (*Invariant: the package path to rescript, it is used to 
-            calculate relative js path
-          *)
-          (!Runtime_package.path // dep_path // js_file)
+      Js_packages_info.runtime_package_path module_system js_file              
 
 (* [output_dir] is decided by the command line argument *)
 let string_of_module_id 
@@ -157,24 +138,7 @@ let string_of_module_id
           else  
           if Js_packages_info.is_runtime_package dep_package_info then 
             get_runtime_module_path dep_module_id current_package_info module_system
-          else 
-            begin match module_system with 
-              | Commonjs | Esmodule -> 
-                dep_pkg.pkg_rel_path // js_file
-              (* Note we did a post-processing when working on Windows *)
-              | Es6_global 
-                ->             
-                begin 
-                  Ext_path.rel_normalized_absolute_path              
-                    ~from:(
-                      Js_packages_info.get_output_dir 
-                        current_package_info
-                        ~package_dir:(Lazy.force Ext_path.package_dir)
-                        module_system 
-                    )
-                    (package_path // dep_pkg.rel_path // js_file)              
-                end
-            end
+          else dep_pkg.pkg_rel_path // js_file
         | Package_script, Package_script 
           -> 
           let js_file =  
diff --git a/compiler/core/js_packages_info.ml b/compiler/core/js_packages_info.ml
index d181b6e086..1a56b964f9 100644
--- a/compiler/core/js_packages_info.ml
+++ b/compiler/core/js_packages_info.ml
@@ -32,7 +32,6 @@ let compatible (dep : module_system) (query : module_system) =
   match query with
   | Commonjs -> dep = Commonjs
   | Esmodule -> dep = Esmodule
-  | Es6_global -> dep = Es6_global || dep = Esmodule
 (* As a dependency Leaf Node, it is the same either [global] or [not] *)
 
 type package_info = {module_system: module_system; path: string; suffix: string}
@@ -41,11 +40,10 @@ type package_name = Pkg_empty | Pkg_runtime | Pkg_normal of string
 
 let ( // ) = Filename.concat
 
-(* in runtime lib, [es6] and [es6] are treated the same wway *)
 let runtime_dir_of_module_system (ms : module_system) =
   match ms with
   | Commonjs -> "js"
-  | Esmodule | Es6_global -> "es6"
+  | Esmodule -> "es6"
 
 let runtime_package_path (ms : module_system) js_file =
   Runtime_package.name // "lib" // runtime_dir_of_module_system ms // js_file
@@ -101,13 +99,11 @@ let string_of_module_system (ms : module_system) =
   match ms with
   | Commonjs -> "CommonJS"
   | Esmodule -> "ESModule"
-  | Es6_global -> "Es6_global"
 
 let module_system_of_string package_name : module_system option =
   match package_name with
   | "commonjs" -> Some Commonjs
-  | "esmodule" | "es6" -> Some Esmodule
-  | "es6-global" -> Some Es6_global
+  | "esmodule" -> Some Esmodule
   | _ -> None
 
 let dump_package_info (fmt : Format.formatter)
diff --git a/compiler/ext/ext_module_system.ml b/compiler/ext/ext_module_system.ml
index c8a0734f5d..930ef78b2c 100644
--- a/compiler/ext/ext_module_system.ml
+++ b/compiler/ext/ext_module_system.ml
@@ -1 +1 @@
-type t = Commonjs | Esmodule | Es6_global
+type t = Commonjs | Esmodule
diff --git a/compiler/ext/literals.ml b/compiler/ext/literals.ml
index 2b469652ad..0eca2b4d5b 100644
--- a/compiler/ext/literals.ml
+++ b/compiler/ext/literals.ml
@@ -123,12 +123,6 @@ let esmodule = "esmodule"
 
 let commonjs = "commonjs"
 
-let es6 = "es6"
-(* [@@deprecated "Will be removed in v12"] *)
-
-let es6_global = "es6-global"
-(* [@@deprecated "Will be removed in v12"] *)
-
 let unused_attribute = "Unused attribute "
 
 (** Used when produce node compatible paths *)
diff --git a/compiler/gentype/GenTypeConfig.ml b/compiler/gentype/GenTypeConfig.ml
index 73925cc1d5..6bf897f764 100644
--- a/compiler/gentype/GenTypeConfig.ml
+++ b/compiler/gentype/GenTypeConfig.ml
@@ -159,9 +159,9 @@ let read_config ~get_config_file ~namespace =
       (* Give priority to gentypeconfig, followed by package-specs *)
       match (module_string, package_specs_module_string) with
       | Some "commonjs", _ -> CommonJS
-      | Some ("esmodule" | "es6"), _ -> ESModule
+      | Some "esmodule", _ -> ESModule
       | None, Some "commonjs" -> CommonJS
-      | None, Some ("esmodule" | "es6" | "es6-global") -> ESModule
+      | None, Some "esmodule" -> ESModule
       | _ -> default.module_
     in
     let module_resolution =
diff --git a/compiler/jsoo/jsoo_playground_main.ml b/compiler/jsoo/jsoo_playground_main.ml
index 3100a3fc82..d21a5bb133 100644
--- a/compiler/jsoo/jsoo_playground_main.ml
+++ b/compiler/jsoo/jsoo_playground_main.ml
@@ -93,9 +93,8 @@ module BundleConfig = struct
 
   let string_of_module_system m =
     match m with
-    | Ext_module_system.Commonjs -> "nodejs"
-    | Esmodule -> "es6"
-    | Es6_global -> "es6_global"
+    | Ext_module_system.Commonjs -> "commonjs"
+    | Esmodule -> "esmodule"
 end
 
 type loc_err_info = {
@@ -604,10 +603,10 @@ module Export = struct
     let config = BundleConfig.make () in
     let set_module_system value =
       match value with
-      | "esmodule" | "es6" ->
+      | "esmodule" ->
         config.module_system <- Ext_module_system.Esmodule;
         true
-      | "commonjs" | "nodejs" ->
+      | "commonjs" ->
         config.module_system <- Commonjs;
         true
       | _ -> false
diff --git a/docs/docson/build-schema.json b/docs/docson/build-schema.json
index ee1959bf50..c7b0ae30ba 100644
--- a/docs/docson/build-schema.json
+++ b/docs/docson/build-schema.json
@@ -2,8 +2,8 @@
   "$schema": "http://json-schema.org/draft-04/schema#",
   "definitions": {
     "module-format": {
-      "enum": ["esmodule", "commonjs", "es6", "es6-global"],
-      "description": "es6 and es6-global are deprecated. Default: commonjs."
+      "enum": ["esmodule", "commonjs"],
+      "description": "Output module format. Default: commonjs."
     },
     "suffix-spec": {
       "type": "string",
diff --git a/rewatch/CompilerConfigurationSpec.md b/rewatch/CompilerConfigurationSpec.md
index e8e77df335..f7f97184c0 100644
--- a/rewatch/CompilerConfigurationSpec.md
+++ b/rewatch/CompilerConfigurationSpec.md
@@ -147,7 +147,7 @@ Currently supported features:
 
 ### Module-Format
 
-enum: "commonjs" | "es6" | "es6-global"
+enum: "commonjs" | "esmodule"
 
 ### Suffix
 
diff --git a/rewatch/src/config.rs b/rewatch/src/config.rs
index 151cde100a..69f27aa453 100644
--- a/rewatch/src/config.rs
+++ b/rewatch/src/config.rs
@@ -797,7 +797,7 @@ pub mod tests {
         {
             "name": "my-monorepo",
             "sources": [ { "dir": "src/", "subdirs": true } ],
-            "package-specs": [ { "module": "es6", "in-source": true } ],
+            "package-specs": [ { "module": "esmodule", "in-source": true } ],
             "suffix": ".mjs",
             "dependencies": [ "@teamwalnut/app" ]
         }
@@ -807,7 +807,7 @@ pub mod tests {
         let specs = config.get_package_specs();
         assert_eq!(specs.len(), 1);
         let spec = specs.first().unwrap();
-        assert_eq!(spec.module, "es6");
+        assert_eq!(spec.module, "esmodule");
         assert_eq!(config.get_suffix(spec), ".mjs");
     }
 
@@ -884,7 +884,7 @@ pub mod tests {
         {
             "name": "my-monorepo",
             "sources": [ { "dir": "src/", "subdirs": true } ],
-            "package-specs": [ { "module": "es6", "in-source": true } ],
+            "package-specs": [ { "module": "esmodule", "in-source": true } ],
             "suffix": ".mjs",
             "dependencies": [ "@teamwalnut/app" ],
             "gentypeconfig": {
@@ -905,7 +905,7 @@ pub mod tests {
         {
             "name": "my-monorepo",
             "sources": [ { "dir": "src/", "subdirs": true } ],
-            "package-specs": [ { "module": "es6", "in-source": true } ],
+            "package-specs": [ { "module": "esmodule", "in-source": true } ],
             "suffix": ".mjs",
             "dependencies": [ "@teamwalnut/app" ],
             "jsx": {
@@ -934,7 +934,7 @@ pub mod tests {
         {
             "name": "my-monorepo",
             "sources": [ { "dir": "src/", "subdirs": true } ],
-            "package-specs": [ { "module": "es6", "in-source": true } ],
+            "package-specs": [ { "module": "esmodule", "in-source": true } ],
             "suffix": ".mjs",
             "dependencies": [ "@teamwalnut/app" ],
             "jsx": { "version": 4, "preserve": true }
@@ -966,7 +966,7 @@ pub mod tests {
             },
             "package-specs": [
                 {
-                "module": "es6",
+                "module": "esmodule",
                 "in-source": true
                 }
             ],
@@ -992,7 +992,7 @@ pub mod tests {
             },
             "package-specs": [
                 {
-                "module": "es6",
+                "module": "esmodule",
                 "in-source": true
                 }
             ],
@@ -1017,7 +1017,7 @@ pub mod tests {
             },
             "package-specs": [
                 {
-                "module": "es6",
+                "module": "esmodule",
                 "in-source": true
                 }
             ],
@@ -1042,7 +1042,7 @@ pub mod tests {
             },
             "package-specs": [
                 {
-                "module": "es6",
+                "module": "esmodule",
                 "in-source": true
                 }
             ],
@@ -1067,7 +1067,7 @@ pub mod tests {
             },
             "package-specs": [
                 {
-                "module": "es6",
+                "module": "esmodule",
                 "in-source": true
                 }
             ],
@@ -1150,7 +1150,7 @@ pub mod tests {
             },
             "package-specs": [
                 {
-                "module": "es6",
+                "module": "esmodule",
                 "in-source": true
                 }
             ],
@@ -1185,7 +1185,7 @@ pub mod tests {
             },
             "package-specs": [
                 {
-                "module": "es6",
+                "module": "esmodule",
                 "in-source": true
                 }
             ],
diff --git a/rewatch/testrepo/packages/dep01/rescript.json b/rewatch/testrepo/packages/dep01/rescript.json
index abecd75563..870e9b9fd9 100644
--- a/rewatch/testrepo/packages/dep01/rescript.json
+++ b/rewatch/testrepo/packages/dep01/rescript.json
@@ -5,7 +5,7 @@
     "subdirs": true
   },
   "package-specs": {
-    "module": "es6",
+    "module": "esmodule",
     "in-source": true
   },
   "suffix": ".bs.js",
diff --git a/rewatch/testrepo/packages/dep02/rescript.json b/rewatch/testrepo/packages/dep02/rescript.json
index 67199231f5..f84064c9cf 100644
--- a/rewatch/testrepo/packages/dep02/rescript.json
+++ b/rewatch/testrepo/packages/dep02/rescript.json
@@ -5,7 +5,7 @@
     "subdirs": true
   },
   "package-specs": {
-    "module": "es6",
+    "module": "esmodule",
     "in-source": true
   },
   "suffix": ".bs.js",
diff --git a/rewatch/testrepo/packages/deprecated-config/rescript.json b/rewatch/testrepo/packages/deprecated-config/rescript.json
index 8a1d772c6c..5b69e72f5c 100644
--- a/rewatch/testrepo/packages/deprecated-config/rescript.json
+++ b/rewatch/testrepo/packages/deprecated-config/rescript.json
@@ -6,7 +6,7 @@
     "subdirs": true
   },
   "package-specs": {
-    "module": "es6",
+    "module": "esmodule",
     "in-source": true
   },
   "suffix": ".mjs",
diff --git a/rewatch/testrepo/packages/file-casing-no-namespace/rescript.json b/rewatch/testrepo/packages/file-casing-no-namespace/rescript.json
index d1d6797059..836f679109 100644
--- a/rewatch/testrepo/packages/file-casing-no-namespace/rescript.json
+++ b/rewatch/testrepo/packages/file-casing-no-namespace/rescript.json
@@ -8,7 +8,7 @@
   ],
   "package-specs": [
     {
-      "module": "es6",
+      "module": "esmodule",
       "in-source": true
     }
   ],
diff --git a/rewatch/testrepo/packages/file-casing/rescript.json b/rewatch/testrepo/packages/file-casing/rescript.json
index 39a3626510..62eb32d122 100644
--- a/rewatch/testrepo/packages/file-casing/rescript.json
+++ b/rewatch/testrepo/packages/file-casing/rescript.json
@@ -9,7 +9,7 @@
   ],
   "package-specs": [
     {
-      "module": "es6",
+      "module": "esmodule",
       "in-source": true
     }
   ],
diff --git a/rewatch/testrepo/packages/namespace-casing/rescript.json b/rewatch/testrepo/packages/namespace-casing/rescript.json
index a46ee03dcf..9526c28c58 100644
--- a/rewatch/testrepo/packages/namespace-casing/rescript.json
+++ b/rewatch/testrepo/packages/namespace-casing/rescript.json
@@ -9,7 +9,7 @@
   ],
   "package-specs": [
     {
-      "module": "es6",
+      "module": "esmodule",
       "in-source": true
     }
   ],
diff --git a/rewatch/testrepo/packages/new-namespace/rescript.json b/rewatch/testrepo/packages/new-namespace/rescript.json
index 9c0696b15c..5eef4fdcef 100644
--- a/rewatch/testrepo/packages/new-namespace/rescript.json
+++ b/rewatch/testrepo/packages/new-namespace/rescript.json
@@ -7,7 +7,7 @@
     "subdirs": true
   },
   "package-specs": {
-    "module": "es6",
+    "module": "esmodule",
     "in-source": true
   },
   "dependencies": ["@testrepo/dep01"],
diff --git a/rewatch/testrepo/packages/standalone/rescript.json b/rewatch/testrepo/packages/standalone/rescript.json
index c04ff06f22..df1aeb6d81 100644
--- a/rewatch/testrepo/packages/standalone/rescript.json
+++ b/rewatch/testrepo/packages/standalone/rescript.json
@@ -1,13 +1,13 @@
 {
-    "name": "standalone",
-    "sources": {
-        "dir": "src",
-        "subdirs": true
-    },
-    "package-specs": {
-        "module": "es6",
-        "in-source": true
-    },
-    "suffix": ".mjs",
-    "dependencies": ["@testrepo/dep01"]
-}
\ No newline at end of file
+  "name": "standalone",
+  "sources": {
+    "dir": "src",
+    "subdirs": true
+  },
+  "package-specs": {
+    "module": "esmodule",
+    "in-source": true
+  },
+  "suffix": ".mjs",
+  "dependencies": ["@testrepo/dep01"]
+}
diff --git a/rewatch/testrepo/packages/with-dev-deps/rescript.json b/rewatch/testrepo/packages/with-dev-deps/rescript.json
index c440306251..331abb6025 100644
--- a/rewatch/testrepo/packages/with-dev-deps/rescript.json
+++ b/rewatch/testrepo/packages/with-dev-deps/rescript.json
@@ -12,7 +12,7 @@
   "dependencies": ["rescript-nodejs"],
   "dev-dependencies": ["@rescript/webapi"],
   "package-specs": {
-    "module": "es6",
+    "module": "esmodule",
     "in-source": true
   },
   "suffix": ".res.js"
diff --git a/rewatch/testrepo/packages/with-ppx/rescript.json b/rewatch/testrepo/packages/with-ppx/rescript.json
index e8b4facce3..2b43624d1a 100644
--- a/rewatch/testrepo/packages/with-ppx/rescript.json
+++ b/rewatch/testrepo/packages/with-ppx/rescript.json
@@ -10,11 +10,11 @@
     "sury"
   ],
   "package-specs": {
-    "module": "es6",
+    "module": "esmodule",
     "in-source": true
   },
   "suffix": ".res.js",
   "ppx-flags": [
     "sury-ppx/bin"
   ]
-}
\ No newline at end of file
+}
diff --git a/rewatch/testrepo/rescript.json b/rewatch/testrepo/rescript.json
index 3141aedeb4..77e7b791ca 100644
--- a/rewatch/testrepo/rescript.json
+++ b/rewatch/testrepo/rescript.json
@@ -6,7 +6,7 @@
   },
   "package-specs": [
     {
-      "module": "es6",
+      "module": "esmodule",
       "in-source": true
     }
   ],
diff --git a/tests/build_tests/deprecated-package-specs/input.js b/tests/build_tests/deprecated-package-specs/input.js
deleted file mode 100644
index a4a4ed69d1..0000000000
--- a/tests/build_tests/deprecated-package-specs/input.js
+++ /dev/null
@@ -1,12 +0,0 @@
-// @ts-check
-
-import assert from "node:assert";
-import { setup } from "#dev/process";
-
-const { execBuild } = setup(import.meta.dirname);
-
-const out = await execBuild();
-assert.match(
-  out.stderr,
-  /deprecated: Option "es6-global" is deprecated\. Use "esmodule" instead\./,
-);
diff --git a/tests/build_tests/deprecated-package-specs/rescript.json b/tests/build_tests/deprecated-package-specs/rescript.json
deleted file mode 100644
index ada61dab5b..0000000000
--- a/tests/build_tests/deprecated-package-specs/rescript.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "name": "deprecated-package-specs",
-  "version": "0.1.0",
-  "sources": "src",
-  "package-specs": {
-    "module": "es6-global"
-  }
-}
diff --git a/tests/build_tests/deprecated-package-specs/src/Index.res b/tests/build_tests/deprecated-package-specs/src/Index.res
deleted file mode 100644
index 8d0b19151f..0000000000
--- a/tests/build_tests/deprecated-package-specs/src/Index.res
+++ /dev/null
@@ -1 +0,0 @@
-let () = Js.log("Hello, ReScript")