diff --git a/build.gradle b/build.gradle
index f976308c4..4dc7f0021 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,8 +2,8 @@ import tasks.ReportGenerateTask
 
 plugins {
 	id 'java-library'
-	id 'org.jetbrains.kotlin.jvm' version '2.0.21'
-	id 'com.google.devtools.ksp' version '2.0.21-1.0.27'
+	id 'org.jetbrains.kotlin.jvm' version '2.0.20'
+	id 'com.google.devtools.ksp' version '2.0.20-1.0.25'
 	id 'maven-publish'
 }
 
diff --git a/buildSrc/build.gradle b/buildSrc/build.gradle
index f17855462..422038ba0 100644
--- a/buildSrc/build.gradle
+++ b/buildSrc/build.gradle
@@ -1,5 +1,5 @@
 plugins {
-	id 'org.jetbrains.kotlin.jvm' version '2.0.21'
+	id 'org.jetbrains.kotlin.jvm' version '2.0.20'
 }
 
 repositories {
diff --git a/kotatsu-parsers-ksp/build.gradle b/kotatsu-parsers-ksp/build.gradle
index b73acbcbe..ce8c88860 100644
--- a/kotatsu-parsers-ksp/build.gradle
+++ b/kotatsu-parsers-ksp/build.gradle
@@ -7,5 +7,5 @@ kotlin {
 }
 
 dependencies {
-	implementation 'com.google.devtools.ksp:symbol-processing-api:2.0.21-1.0.27'
+	implementation 'com.google.devtools.ksp:symbol-processing-api:2.0.20-1.0.25'
 }