diff --git a/CHANGELOG.md b/CHANGELOG.md
index d2029e86..be6c97fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [14.34.1](https://github.com/mljs/spectra-processing/compare/v14.34.0...v14.34.1) (2026-09-03)
+
+
+### Bug Fixes
+
+* xIsMonotonic with 2 values could be wrong ([#409](https://github.com/mljs/spectra-processing/issues/409)) ([2967591](https://github.com/mljs/spectra-processing/commit/2967591ce7b9e4c37c9dc25949d8870caf9ac0b6))
+
 ## [14.34.0](https://github.com/mljs/spectra-processing/compare/v14.33.0...v14.34.0) (2026-08-26)
 
 
diff --git a/package-lock.json b/package-lock.json
index f4ecf2d2..920fef97 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "ml-spectra-processing",
-  "version": "14.34.0",
+  "version": "14.34.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "ml-spectra-processing",
-      "version": "14.34.0",
+      "version": "14.34.1",
       "license": "MIT",
       "dependencies": {
         "binary-search": "^1.3.6",
diff --git a/package.json b/package.json
index e20a4038..7e066b87 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ml-spectra-processing",
-  "version": "14.34.0",
+  "version": "14.34.1",
   "license": "MIT",
   "description": "Various method to process spectra",
   "keywords": [],