diff --git a/.idea/vcs.xml b/.idea/vcs.xml
index c95715dd..db553c36 100644
--- a/.idea/vcs.xml
+++ b/.idea/vcs.xml
@@ -1,10 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="GithubSharedProjectSettings">
-    <option name="branchProtectionPatterns">
+  <component name="IssueNavigationConfiguration">
+    <option name="links">
       <list>
-        <option value="develop" />
-        <option value="release.*" />
+        <IssueNavigationLink>
+          <option name="issueRegexp" value="(GitHub Issue|GH Issue)( +#?)([0-9]+)" />
+          <option name="linkRegexp" value="(GitHub Issue|GH Issue)( +#?)([0-9]+)&#9;https://github.com/LabKey/internal-issues/issues/$3" />
+        </IssueNavigationLink>
       </list>
     </option>
   </component>
diff --git a/README.md b/README.md
index 86809f67..ac03edc4 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,15 @@ If you are making changes to the plugins, please see the [internal docs](https:/
 on how to do that, including how to develop and test locally and the versioning information.
 
 ## Release Notes
+### 8.0.0
+*Released*: 3 April 2026
+(Earliest compatible LabKey version: 26.3.3)
+- [GitHub Issue 464](https://github.com/LabKey/internal-issues/issues/464) Update `Distribution.substituteModuleDependencies` (moved from `BuildUtils`) to incorporate variant usage so it will pick up the module file
+- Update to Gradle 9.4.1
+- Update various dependency versions
+- [Github Issue 1015](https://github.com/LabKey/internal-issues/issues/1015) Update `CheckForVersionConflicts` to account for using some jars that differ by classifier only but should not coexist.
+- Remove setting of VcsTag property since our TC builds do not check out tags and will never populate this with a value
+
 ### 7.3.1
 *Released* 11 February 2026
 (Earliest compatible LabKey version: 25.10)
diff --git a/build.gradle b/build.gradle
index a751b7ab..cb927265 100644
--- a/build.gradle
+++ b/build.gradle
@@ -35,15 +35,15 @@ dependencies {
     api "org.apache.commons:commons-text:${commonsTextVersion}"
     api "commons-io:commons-io:${commonsIoVersion}"
     api "com.fasterxml.jackson.core:jackson-databind:${jacksonVersion}"
-    implementation "org.apache.httpcomponents.core5:httpcore5:${httpcoreVersion}"
-    api "org.apache.httpcomponents.client5:httpclient5:${httpclientVersion}"
+    implementation "org.apache.httpcomponents.core5:httpcore5:${httpcore5Version}"
+    api "org.apache.httpcomponents.client5:httpclient5:${httpclient5Version}"
     api "org.json:json:${jsonVersion}"
     implementation "com.graphql-java:graphql-java:${graphqlJavaVersion}"
     api "org.ajoberstar.grgit:grgit-gradle:${grgitGradleVersion}"
 }
 
 group = 'org.labkey.build'
-project.version = "7.4.0-SNAPSHOT"
+project.version = "8.1.0-SNAPSHOT"
 
 gradlePlugin {
     plugins {
diff --git a/gradle.properties b/gradle.properties
index d032ea94..4c722d3e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,18 +1,18 @@
 artifactory_contextUrl=https://labkey.jfrog.io/artifactory
 
-artifactoryPluginVersion=6.0.0
+artifactoryPluginVersion=6.0.4
 
-commonsIoVersion=2.20.0
-commonsLang3Version=3.18.0
-commonsTextVersion=1.14.0
+commonsIoVersion=2.21.0
+commonsLang3Version=3.20.0
+commonsTextVersion=1.15.0
 
-grgitGradleVersion=5.3.2
-graphqlJavaVersion=24.2
+grgitGradleVersion=5.3.3
+graphqlJavaVersion=25.0
 
-groovySqlVersion=4.0.27
+groovySqlVersion=5.0.4
 
-httpclientVersion=5.5
-httpcoreVersion=5.3.4
+httpclient5Version=5.6
+httpcore5Version=5.4.2
 
-jacksonVersion=2.19.2
-jsonVersion=20250517
+jacksonVersion=2.21.2
+jsonVersion=20251224
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 8bdaf60c..f8e1ee31 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 23449a2b..c61a118f 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.4.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/gradlew b/gradlew
index ef07e016..adff685a 100755
--- a/gradlew
+++ b/gradlew
@@ -114,7 +114,6 @@ case "$( uname )" in                #(
   NONSTOP* )        nonstop=true ;;
 esac
 
-CLASSPATH="\\\"\\\""
 
 
 # Determine the Java command to use to start the JVM.
@@ -172,7 +171,6 @@ fi
 # For Cygwin or MSYS, switch paths to Windows format before running java
 if "$cygwin" || "$msys" ; then
     APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
-    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
 
     JAVACMD=$( cygpath --unix "$JAVACMD" )
 
@@ -212,7 +210,6 @@ DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
-        -classpath "$CLASSPATH" \
         -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
         "$@"
 
diff --git a/gradlew.bat b/gradlew.bat
index db3a6ac2..c4bdd3ab 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -70,11 +70,10 @@ goto fail
 :execute
 @rem Setup the command line
 
-set CLASSPATH=
 
 
 @rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
 
 :end
 @rem End local scope for the variables with windows NT shell
diff --git a/src/main/groovy/org/labkey/gradle/plugin/Api.groovy b/src/main/groovy/org/labkey/gradle/plugin/Api.groovy
index 130f555f..7fa137aa 100644
--- a/src/main/groovy/org/labkey/gradle/plugin/Api.groovy
+++ b/src/main/groovy/org/labkey/gradle/plugin/Api.groovy
@@ -17,6 +17,7 @@ package org.labkey.gradle.plugin
 
 import org.gradle.api.Plugin
 import org.gradle.api.Project
+import org.gradle.api.attributes.Usage
 import org.gradle.api.file.DuplicatesStrategy
 import org.gradle.api.tasks.Copy
 import org.gradle.api.tasks.bundling.Jar
@@ -52,7 +53,14 @@ class Api implements Plugin<Project>
     private void addConfigurations(Project project)
     {
         project.configurations {
-            apiJarFile // used by other project to declare dependencies to this project api jar
+            apiJarFile { // used by other project to declare dependencies to this project's api jar
+                canBeConsumed = true
+                canBeResolved = false
+                attributes.attribute(Usage.USAGE_ATTRIBUTE, project.objects.named(Usage, Usage.JAVA_RUNTIME))
+                // The second attribute is needed to be able to distinguish from the module jar file when doing dependency substitution for distributions
+                attributes.attribute(FileModule.ARTIFACT_TYPE, FileModule.API_JAR_ARTIFACT_TYPE)
+            }
+
         }
         project.configurations.apiJarFile.setDescription("Configuration that depends on the task that generates the api jar file.  Projects that depend on this project's api jar file should use this configuration in their dependency declaration.")
     }
diff --git a/src/main/groovy/org/labkey/gradle/plugin/Distribution.groovy b/src/main/groovy/org/labkey/gradle/plugin/Distribution.groovy
index 9cec6412..471bba30 100644
--- a/src/main/groovy/org/labkey/gradle/plugin/Distribution.groovy
+++ b/src/main/groovy/org/labkey/gradle/plugin/Distribution.groovy
@@ -18,7 +18,10 @@ package org.labkey.gradle.plugin
 import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.Task
+import org.gradle.api.UnknownDomainObjectException
+import org.gradle.api.artifacts.Configuration
 import org.gradle.api.artifacts.Dependency
+import org.gradle.api.artifacts.DependencySubstitutions
 import org.gradle.api.artifacts.ModuleDependency
 import org.gradle.api.artifacts.ProjectDependency
 import org.gradle.api.file.DeleteSpec
@@ -95,7 +98,7 @@ class Distribution implements Plugin<Project>
 
         BuildUtils.addLabKeyDependency(project: project, config: "embedded", depProjectPath: BuildUtils.getEmbeddedProjectPath(project.gradle), depVersion: project.labkeyVersion, depProjectConfig: "embedded", transitive: false)
         TaskUtils.configureTaskIfPresent(project, 'artifactoryDeploy', { dependsOn(project.tasks.distribution) })
-
+        substituteModuleDependencies(project, "distribution")
     }
 
     private static void addTasks(Project project)
@@ -161,6 +164,40 @@ class Distribution implements Plugin<Project>
                     project.dependencies.add("distribution", dep)
         }
     }
+
+    // See GH Issue 464
+    static void substituteModuleDependencies(Project project, String configName)
+    {
+        try {
+            project.configurations.named(configName) { Configuration config ->
+                config.resolutionStrategy.dependencySubstitution { DependencySubstitutions ds ->
+                    project.rootProject.subprojects {
+                        Project p ->
+                            {
+                                p.logger.debug("Considering substitution for ${p.path}.")
+                                if (BuildUtils.shouldBuildFromSource(p)) {
+                                    if (p.plugins.hasPlugin('org.labkey.build.module') ||
+                                            p.plugins.hasPlugin('org.labkey.build.fileModule') ||
+                                            p.plugins.hasPlugin('org.labkey.build.javaModule')
+                                    ) {
+                                        ds.substitute(ds.module("org.labkey.module:${p.name}"))
+                                                .using(variant(ds.project(p.path)) {
+                                                    attributes {
+                                                        attribute(FileModule.ARTIFACT_TYPE, FileModule.MODULE_ARTIFACT_TYPE)
+                                                    }
+                                                })
+
+                                        p.logger.info("Substituting org.labkey.module:${p.name} with ${p.path} module file")
+                                    }
+                                }
+                            }
+                    }
+                }
+            }
+        } catch (UnknownDomainObjectException ignore) {
+            project.logger.debug("No ${configName} configuration found for ${project.path}.")
+        }
+    }
 }
 
 
diff --git a/src/main/groovy/org/labkey/gradle/plugin/FileModule.groovy b/src/main/groovy/org/labkey/gradle/plugin/FileModule.groovy
index e4f2bc51..bc1739d2 100644
--- a/src/main/groovy/org/labkey/gradle/plugin/FileModule.groovy
+++ b/src/main/groovy/org/labkey/gradle/plugin/FileModule.groovy
@@ -23,6 +23,8 @@ import org.gradle.api.UnknownDomainObjectException
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.artifacts.Dependency
 import org.gradle.api.artifacts.ProjectDependency
+import org.gradle.api.attributes.Attribute
+import org.gradle.api.attributes.Usage
 import org.gradle.api.file.CopySpec
 import org.gradle.api.file.DuplicatesStrategy
 import org.gradle.api.java.archives.Manifest
@@ -44,6 +46,10 @@ import org.labkey.gradle.util.TaskUtils
  */
 class FileModule implements Plugin<Project>
 {
+    public static final Attribute ARTIFACT_TYPE = Attribute.of('artifactType', String)
+    public static final String MODULE_ARTIFACT_TYPE = "module"
+    public static final String API_JAR_ARTIFACT_TYPE = "apiJar"
+
     static boolean shouldDoBuild(Project project, boolean logMessages)
     {
         List<String> indicators = new ArrayList<>()
@@ -115,7 +121,13 @@ class FileModule implements Plugin<Project>
     {
         project.configurations
                 {
-                    published
+                    published {
+                        canBeConsumed = true
+                        canBeResolved = false
+                        attributes.attribute(Usage.USAGE_ATTRIBUTE, project.objects.named(Usage, Usage.JAVA_RUNTIME))
+                        // The second attribute is needed to be able to distinguish from the API jar file when doing dependency substitution for distributions
+                        attributes.attribute(ARTIFACT_TYPE, MODULE_ARTIFACT_TYPE)
+                    }
                 }
     }
 
@@ -168,8 +180,7 @@ class FileModule implements Plugin<Project>
 
         project.artifacts
                 {
-                    // TODO: Figure out how to add this artifact without resolving 'module' task
-                    published moduleTask.get()
+                    published(moduleTask)
                 }
 
         project.tasks.register('deployModule')
diff --git a/src/main/groovy/org/labkey/gradle/plugin/ServerDeploy.groovy b/src/main/groovy/org/labkey/gradle/plugin/ServerDeploy.groovy
index 0edd0813..ea146154 100644
--- a/src/main/groovy/org/labkey/gradle/plugin/ServerDeploy.groovy
+++ b/src/main/groovy/org/labkey/gradle/plugin/ServerDeploy.groovy
@@ -16,18 +16,19 @@
 package org.labkey.gradle.plugin
 
 import org.apache.commons.lang3.SystemUtils
-import org.gradle.api.file.DuplicatesStrategy
-import org.gradle.api.DefaultTask
 import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.Task
-import org.gradle.api.artifacts.Configuration
-import org.gradle.api.file.CopySpec
 import org.gradle.api.file.DeleteSpec
 import org.gradle.api.file.FileCollection
 import org.gradle.api.tasks.Delete
 import org.labkey.gradle.plugin.extension.ServerDeployExtension
-import org.labkey.gradle.task.*
+import org.labkey.gradle.task.CheckForVersionConflicts
+import org.labkey.gradle.task.DeployApp
+import org.labkey.gradle.task.DeployDistribution
+import org.labkey.gradle.task.StageDistribution
+import org.labkey.gradle.task.StageModules
+import org.labkey.gradle.task.UndeployModules
 import org.labkey.gradle.util.BuildUtils
 import org.labkey.gradle.util.GroupNames
 import org.labkey.gradle.util.TaskUtils
diff --git a/src/main/groovy/org/labkey/gradle/task/CheckForVersionConflicts.groovy b/src/main/groovy/org/labkey/gradle/task/CheckForVersionConflicts.groovy
index 32afe27d..53fa7c44 100644
--- a/src/main/groovy/org/labkey/gradle/task/CheckForVersionConflicts.groovy
+++ b/src/main/groovy/org/labkey/gradle/task/CheckForVersionConflicts.groovy
@@ -31,6 +31,13 @@ import java.util.regex.Matcher
  */
 class CheckForVersionConflicts  extends DefaultTask
 {
+    // GH Issue 1015: We are using milestone versions of spring-ai jars, which use classifiers like -M2 to distinguish the different versions.
+    // We want to have the later milestones replace the earlier ones, so we want to exclude the milestone classifier from the name when
+    // comparing for conflicts. This is rather sketchy and I hope it goes away soon. We match on the spring-ai- prefix to try to guard against
+    // additional jars that might be included in later milestones, but it's entirely possible that, say, a jar with milestone M2 will not have
+    // the same name with M3 or M4 and won't get cleaned up during the conflict checking.
+    private static final String SPRING_AI_ARTIFACT_PREFIX = "spring-ai-";
+
     @Input
     Set<String> MULTIPLE_VERSIONS_ALLOWED = Set.of("jackson-core", "jackson-databind")
 
@@ -87,8 +94,10 @@ class CheckForVersionConflicts  extends DefaultTask
             if (matcher.matches())
             {
                 // we support artifacts with different classifiers (e.g., activeio-core-3.1.0-tests.jar should not be in conflict with activeio-core-3.1.0.jar)
-                String nameWithClassifier = matcher.group(BuildUtils.ARTIFACT_NAME_INDEX)
-                if (matcher.group(BuildUtils.ARTIFACT_CLASSIFIER_INDEX) != null)
+                String nameWithoutClassifier = matcher.group(BuildUtils.ARTIFACT_NAME_INDEX)
+                String nameWithClassifier = nameWithoutClassifier
+                boolean useClassifierInName = !nameWithoutClassifier.startsWith(SPRING_AI_ARTIFACT_PREFIX)
+                if (matcher.group(BuildUtils.ARTIFACT_CLASSIFIER_INDEX) != null && useClassifierInName)
                     nameWithClassifier += matcher.group(BuildUtils.ARTIFACT_CLASSIFIER_INDEX)
                 if (nameVersionMap.containsKey(nameWithClassifier))
                 {
@@ -98,7 +107,7 @@ class CheckForVersionConflicts  extends DefaultTask
                     }
                     else
                     {
-                        haveMultiples = true
+                        haveMultiples = haveMultiples || useClassifierInName
                         conflictMessages += "Multiple existing ${matcher.group(BuildUtils.ARTIFACT_NAME_INDEX)} ${extension} files."
                     }
                 }
@@ -119,9 +128,9 @@ class CheckForVersionConflicts  extends DefaultTask
             if (matcher.matches())
             {
                 String name = matcher.group(BuildUtils.ARTIFACT_NAME_INDEX)
-                if (matcher.group(BuildUtils.ARTIFACT_CLASSIFIER_INDEX) != null)
+                if (matcher.group(BuildUtils.ARTIFACT_CLASSIFIER_INDEX) != null && !name.startsWith(SPRING_AI_ARTIFACT_PREFIX))
                     name += matcher.group(BuildUtils.ARTIFACT_CLASSIFIER_INDEX)
-                if (nameVersionMap.containsKey(name))
+                if (nameVersionMap.containsKey(name)) // with match for spring-ai
                 {
                     String version = matcher.group(BuildUtils.ARTIFACT_VERSION_INDEX)
                     if (version != null)
diff --git a/src/main/groovy/org/labkey/gradle/util/BuildUtils.groovy b/src/main/groovy/org/labkey/gradle/util/BuildUtils.groovy
index 64da1cd3..08a1755c 100644
--- a/src/main/groovy/org/labkey/gradle/util/BuildUtils.groovy
+++ b/src/main/groovy/org/labkey/gradle/util/BuildUtils.groovy
@@ -30,6 +30,7 @@ import org.gradle.api.file.DirectoryProperty
 import org.gradle.api.initialization.Settings
 import org.gradle.api.invocation.Gradle
 import org.gradle.api.provider.Provider
+import org.labkey.gradle.plugin.FileModule
 import org.labkey.gradle.plugin.extension.LabKeyExtension
 import org.labkey.gradle.plugin.extension.ModuleExtension
 import org.labkey.gradle.plugin.extension.ServerDeployExtension
@@ -494,7 +495,6 @@ class BuildUtils
 
     public static final String VCS_URL_PROP_NAME = "VcsURL"
     public static final String VCS_BRANCH_PROP_NAME = "VcsBranch"
-    public static final String VCS_TAG_PROP_NAME = "VcsTag"
     public static final String VCS_REVISION_PROP_NAME = "VcsRevision"
     public static final String BUILD_NUMBER_PROP_NAME = "BuildNumber"
 
@@ -519,16 +519,10 @@ class BuildUtils
             def revision = "${gitCmd} -C ${project.projectDir.absolutePath} rev-parse @".execute().text.trim()
             project.logger.info("${project.path} git revision: ${revision}")
             ret.setProperty(VCS_REVISION_PROP_NAME, revision)
-            def tag = "${gitCmd} -C ${project.projectDir.absolutePath} describe --tags --exact-match 2> /dev/null".execute().text.trim()
-            project.logger.info("${project.path} git tag: ${revision}")
-            if (!tag.isEmpty() && !tag.equals(revision))
-                ret.setProperty(VCS_TAG_PROP_NAME, tag)
-            else
-                ret.setProperty(VCS_TAG_PROP_NAME, "")}
+        }
         else if (!project.hasProperty("includeVcs"))
         {
             ret.setProperty(VCS_BRANCH_PROP_NAME, "Unknown")
-            ret.setProperty(VCS_TAG_PROP_NAME, "Unknown")
             ret.setProperty(VCS_URL_PROP_NAME, "Unknown")
             ret.setProperty(VCS_REVISION_PROP_NAME, "Unknown")
         }
@@ -974,38 +968,6 @@ class BuildUtils
         return project.objects.directoryProperty().convention(getRootBuildDirectoryProvider(project, defaultDirectoryPath))
     }
 
-    // See Issue 49316: https://www.labkey.org/home/Developer/issues/Secure/issues-details.view?issueId=49316
-    static void substituteModuleDependencies(Project project, String configName)
-    {
-        try {
-            project.configurations.named(configName) { Configuration config ->
-                config.resolutionStrategy.dependencySubstitution { DependencySubstitutions ds ->
-                    project.rootProject.subprojects {
-                        Project p ->
-                            {
-                                p.logger.debug("Considering substitution for ${p.path}.")
-                                if (shouldBuildFromSource(p)) {
-                                    if (p.plugins.hasPlugin('org.labkey.build.module') ||
-                                            p.plugins.hasPlugin('org.labkey.build.fileModule') ||
-                                            p.plugins.hasPlugin('org.labkey.build.javaModule')
-                                    ) {
-                                        ds.substitute ds.module("org.labkey.module:${p.name}") using ds.project(p.path)
-                                        p.logger.info("Substituting org.labkey.module:${p.name} with ${p.path}")
-                                    }
-//                                    if (p.plugins.hasPlugin('org.labkey.build.api'))
-//                                    {
-//                                        ds.substitute ds.module("org.labkey.api:${p.name}") using ds.project(p.path)
-//                                    }
-                                }
-                            }
-                    }
-                }
-            }
-        } catch (UnknownDomainObjectException ignore) {
-            project.logger.debug("No ${configName} configuration found for ${project.path}.")
-        }
-    }
-
     enum BuildFromSource {
         _TRUE,
         _FALSE,
diff --git a/src/main/resources/module.template.xml b/src/main/resources/module.template.xml
index 14561da0..11ba4b2a 100644
--- a/src/main/resources/module.template.xml
+++ b/src/main/resources/module.template.xml
@@ -28,7 +28,6 @@
         <property name="vcsRevision" value="@@VcsRevision@@"/>
         <property name="vcsUrl" value="@@VcsURL@@"/>
         <property name="vcsBranch" value="@@VcsBranch@@"/>
-        <property name="vcsTag" value="@@VcsTag@@"/>
         <property name="buildUser" value="@@BuildUser@@"/>
         <property name="buildTime" value="@@BuildTime@@"/>
         <property name="buildOS" value="@@BuildOS@@"/>