diff --git a/.github/workflows/auto-merge.yml b/.github/workflows/auto-merge.yml
index 9dcb01c337..37c117f8b0 100644
--- a/.github/workflows/auto-merge.yml
+++ b/.github/workflows/auto-merge.yml
@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
-          ref: 1.0.26-release
+          ref: 1.0.27-release
   
       - name: merge commits from main to release branch
         run: |
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 30ba7c13ff..3c569bdf0a 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,11 +4,11 @@ name: CI
 
 on:
   push:
-    branches: [ main, 1.0.26-release, 1.0.25-release ]
+    branches: [ main, '[0-9]+.[0-9]+.[0-9]+-release*' ]
   pull_request:
-    branches: [ main, 1.0.26-release, 1.0.25-release ]
+    branches: [ main, '[0-9]+.[0-9]+.[0-9]+-release*' ]
   workflow_dispatch:
-    branches: [ main, 1.0.26-release, 1.0.25-release ]
+    branches: [ main, '[0-9]+.[0-9]+.[0-9]+-release*' ]
 
 jobs:
   build-and-test:
diff --git a/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KotlinFactories.kt b/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KotlinFactories.kt
index 36ed53b8b5..c2f02a8374 100644
--- a/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KotlinFactories.kt
+++ b/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KotlinFactories.kt
@@ -166,7 +166,7 @@ class KotlinFactories {
                         from = compilerOptions,
                         into = kspTask.compilerOptions
                     )
-                    kspTask.produceUnpackagedKlib.set(false)
+                    kspTask.produceUnpackedKlib.set(false)
                     kspTask.onlyIf {
                         // KonanTarget is not properly serializable, hence we should check by name
                         // see https://youtrack.jetbrains.com/issue/KT-61657.
diff --git a/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KspSubplugin.kt b/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KspSubplugin.kt
index 4a0220cf46..ebdfbe389f 100644
--- a/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KspSubplugin.kt
+++ b/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KspSubplugin.kt
@@ -417,6 +417,7 @@ class KspGradleSubplugin @Inject internal constructor(private val registry: Tool
         }
 
         fun configureLanguageVersion(kspTask: KotlinCompilationTask<*>) {
+            kspTask.compilerOptions.useK2.value(false)
             val languageVersion = kotlinCompilation.compilerOptions.options.languageVersion
             val progressiveMode = kotlinCompilation.compilerOptions.options.progressiveMode
             kspTask.compilerOptions.languageVersion.value(
diff --git a/gradle.properties b/gradle.properties
index 1ded0a3151..a43bc6b556 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,9 +1,9 @@
 # Copied from kotlinc
 org.gradle.jvmargs=-Duser.country=US -Dkotlin.daemon.jvm.options=-Xmx4096m -Dfile.encoding=UTF-8
 
-kotlinBaseVersion=2.1.20-dev-201
+kotlinBaseVersion=2.0.21
 agpBaseVersion=8.7.0
-intellijVersion=233.13135.128
+intellijVersion=233.13135.103
 junitVersion=4.13.1
 junit5Version=5.8.2
 junitPlatformVersion=1.8.2