diff --git a/.circleci/config.yml b/.circleci/config.yml
index 8dabc3f..17b50f1 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -21,7 +21,7 @@ commands:
       - sdkman/setup-sdkman
       - sdkman/sdkman-install:
           candidate: kotlin
-          version: 2.0.20
+          version: 2.0.0
       - run:
           name: Download dependencies
           command: ./bld download
diff --git a/.github/workflows/bld.yml b/.github/workflows/bld.yml
index f76f164..a3c4951 100644
--- a/.github/workflows/bld.yml
+++ b/.github/workflows/bld.yml
@@ -1,6 +1,6 @@
 name: bld-ci
 
-on: [push, pull_request, workflow_dispatch]
+on: [ push, pull_request, workflow_dispatch ]
 
 env:
   ALPHAVANTAGE_API_KEY: ${{ secrets.ALPHAVANTAGE_API_KEY }}
@@ -22,8 +22,8 @@ jobs:
 
     strategy:
       matrix:
-        java-version: [17, 21, 22]
-        kotlin-version: [1.9.24, 2.0.20]
+        java-version: [ 17, 21, 22 ]
+        kotlin-version: [ 1.9.24, 2.0.0 ]
 
     steps:
       - name: Checkout source repository
diff --git a/lib/bld/bld-wrapper.properties b/lib/bld/bld-wrapper.properties
index 547a2bb..ed0fdb7 100644
--- a/lib/bld/bld-wrapper.properties
+++ b/lib/bld/bld-wrapper.properties
@@ -4,7 +4,7 @@ bld.downloadLocation=
 bld.extension-detekt=com.uwyn.rife2:bld-detekt:0.9.7
 bld.extension-gv=com.uwyn.rife2:bld-generated-version:0.9.9
 bld.extension-jacoco=com.uwyn.rife2:bld-jacoco-report:0.9.8
-bld.extension-kotlin=com.uwyn.rife2:bld-kotlin:1.0.2
+bld.extension-kotlin=com.uwyn.rife2:bld-kotlin:1.0.1
 bld.repositories=MAVEN_LOCAL,MAVEN_CENTRAL,RIFE2_SNAPSHOTS,RIFE2_RELEASES
 bld.sourceDirectories=
 bld.version=2.1.0