diff --git a/backend/services/entries/entries-api/build.gradle.kts b/backend/services/entries/entries-api/build.gradle.kts
index c34e8a64..b9f036d0 100644
--- a/backend/services/entries/entries-api/build.gradle.kts
+++ b/backend/services/entries/entries-api/build.gradle.kts
@@ -7,12 +7,10 @@ group = "at.mocode"
 version = "1.0.0"
 
 kotlin {
+  // Toolchain is now handled centrally in the root build.gradle.kts
 
   val enableWasm = providers.gradleProperty("enableWasm").orNull == "true"
 
-  // Align the toolchain with a project (see composeApp uses 25)
-  jvmToolchain(25)
-
   // JVM target for backend usage
   jvm()
 
diff --git a/backend/services/ping/ping-api/build.gradle.kts b/backend/services/ping/ping-api/build.gradle.kts
index 7ad428f4..418c45cd 100644
--- a/backend/services/ping/ping-api/build.gradle.kts
+++ b/backend/services/ping/ping-api/build.gradle.kts
@@ -7,12 +7,10 @@ group = "at.mocode"
 version = "1.0.0"
 
 kotlin {
+    // Toolchain is now handled centrally in the root build.gradle.kts
 
     val enableWasm = providers.gradleProperty("enableWasm").orNull == "true"
 
-    // Align toolchain with project (see composeApp uses 25)
-    jvmToolchain(25)
-
     // JVM target for backend usage
     jvm()
 
diff --git a/core/core-domain/build.gradle.kts b/core/core-domain/build.gradle.kts
index ea293267..a96f23ab 100644
--- a/core/core-domain/build.gradle.kts
+++ b/core/core-domain/build.gradle.kts
@@ -4,7 +4,7 @@ plugins {
 }
 
 kotlin {
-  jvmToolchain(25)
+    // Toolchain is now handled centrally in the root build.gradle.kts
 
   jvm {
     compilerOptions {
diff --git a/core/core-utils/build.gradle.kts b/core/core-utils/build.gradle.kts
index 0e3ac1b3..c7f7e6f8 100644
--- a/core/core-utils/build.gradle.kts
+++ b/core/core-utils/build.gradle.kts
@@ -6,7 +6,7 @@ plugins {
 }
 
 kotlin {
-  jvmToolchain(25)
+    // Toolchain is now handled centrally in the root build.gradle.kts
 
   // Target platforms
   jvm {
diff --git a/frontend/core/design-system/build.gradle.kts b/frontend/core/design-system/build.gradle.kts
index aa1b8f88..e0b2cea0 100644
--- a/frontend/core/design-system/build.gradle.kts
+++ b/frontend/core/design-system/build.gradle.kts
@@ -6,10 +6,9 @@ plugins {
 }
 
 kotlin {
+  // Toolchain is now handled centrally in the root build.gradle.kts
   val enableWasm = providers.gradleProperty("enableWasm").orNull == "true"
 
-  jvmToolchain(25)
-
   jvm()
   js(IR) {
     browser()
diff --git a/frontend/core/domain/build.gradle.kts b/frontend/core/domain/build.gradle.kts
index d1ab3524..c89da502 100644
--- a/frontend/core/domain/build.gradle.kts
+++ b/frontend/core/domain/build.gradle.kts
@@ -9,10 +9,9 @@ plugins {
 }
 
 kotlin {
+  // Toolchain is now handled centrally in the root build.gradle.kts
   val enableWasm = providers.gradleProperty("enableWasm").orNull == "true"
 
-  jvmToolchain(25)
-
   jvm()
   js {
     browser {
diff --git a/frontend/core/local-db/build.gradle.kts b/frontend/core/local-db/build.gradle.kts
index 6ff52f80..3e3829f8 100644
--- a/frontend/core/local-db/build.gradle.kts
+++ b/frontend/core/local-db/build.gradle.kts
@@ -9,7 +9,7 @@ plugins {
 }
 
 kotlin {
-  jvmToolchain(25)
+  // Toolchain is now handled centrally in the root build.gradle.kts
 
   jvm()
   js {
diff --git a/frontend/core/navigation/build.gradle.kts b/frontend/core/navigation/build.gradle.kts
index e5c6d4c7..38602126 100644
--- a/frontend/core/navigation/build.gradle.kts
+++ b/frontend/core/navigation/build.gradle.kts
@@ -10,10 +10,9 @@ group = "at.mocode.clients.shared"
 version = "1.0.0"
 
 kotlin {
+  // Toolchain is now handled centrally in the root build.gradle.kts
   val enableWasm = providers.gradleProperty("enableWasm").orNull == "true"
 
-  jvmToolchain(25)
-
   jvm()
 
   js {
diff --git a/frontend/core/network/build.gradle.kts b/frontend/core/network/build.gradle.kts
index 507cba76..fa4ac602 100644
--- a/frontend/core/network/build.gradle.kts
+++ b/frontend/core/network/build.gradle.kts
@@ -9,10 +9,9 @@ plugins {
 }
 
 kotlin {
+  // Toolchain is now handled centrally in the root build.gradle.kts
   val enableWasm = providers.gradleProperty("enableWasm").orNull == "true"
 
-  jvmToolchain(25)
-
   jvm()
   js {
     browser {
diff --git a/frontend/features/auth-feature/build.gradle.kts b/frontend/features/auth-feature/build.gradle.kts
index 35a31fd1..db3c23f5 100644
--- a/frontend/features/auth-feature/build.gradle.kts
+++ b/frontend/features/auth-feature/build.gradle.kts
@@ -16,10 +16,9 @@ group = "at.mocode.clients"
 version = "1.0.0"
 
 kotlin {
+  // Toolchain is now handled centrally in the root build.gradle.kts
   val enableWasm = providers.gradleProperty("enableWasm").orNull == "true"
 
-  jvmToolchain(25)
-
   jvm()
 
   js {
diff --git a/frontend/features/members-feature/build.gradle.kts b/frontend/features/members-feature/build.gradle.kts
index 540809af..4caa6433 100644
--- a/frontend/features/members-feature/build.gradle.kts
+++ b/frontend/features/members-feature/build.gradle.kts
@@ -16,10 +16,9 @@ group = "at.mocode.clients"
 version = "1.0.0"
 
 kotlin {
+  // Toolchain is now handled centrally in the root build.gradle.kts
   val enableWasm = providers.gradleProperty("enableWasm").orNull == "true"
 
-  jvmToolchain(25)
-
   jvm()
 
   js {
diff --git a/frontend/features/ping-feature/build.gradle.kts b/frontend/features/ping-feature/build.gradle.kts
index 6fb0ab70..df9b8d99 100644
--- a/frontend/features/ping-feature/build.gradle.kts
+++ b/frontend/features/ping-feature/build.gradle.kts
@@ -16,10 +16,9 @@ group = "at.mocode.clients"
 version = "1.0.0"
 
 kotlin {
+  // Toolchain is now handled centrally in the root build.gradle.kts
   val enableWasm = providers.gradleProperty("enableWasm").orNull == "true"
 
-  jvmToolchain(25)
-
   jvm()
 
   js {
diff --git a/frontend/shared/build.gradle.kts b/frontend/shared/build.gradle.kts
index 47978ee3..1ebbf87c 100644
--- a/frontend/shared/build.gradle.kts
+++ b/frontend/shared/build.gradle.kts
@@ -18,10 +18,9 @@ plugins {
 }
 
 kotlin {
+  // Toolchain is now handled centrally in the root build.gradle.kts
   val enableWasm = providers.gradleProperty("enableWasm").orNull == "true"
 
-  jvmToolchain(25)
-
   // JVM Target für Desktop
   jvm()
 
diff --git a/frontend/shells/meldestelle-portal/build.gradle.kts b/frontend/shells/meldestelle-portal/build.gradle.kts
index f0d358fe..48128506 100644
--- a/frontend/shells/meldestelle-portal/build.gradle.kts
+++ b/frontend/shells/meldestelle-portal/build.gradle.kts
@@ -17,9 +17,8 @@ plugins {
 }
 
 kotlin {
-    val enableWasm = providers.gradleProperty("enableWasm").orNull == "true"
-
-    jvmToolchain(25)
+  // Toolchain is now handled centrally in the root build.gradle.kts
+  val enableWasm = providers.gradleProperty("enableWasm").orNull == "true"
 
     // JVM Target für Desktop
     jvm {