diff --git a/tools/idea/build.gradle.kts b/tools/idea/build.gradle.kts
index 25525b935..b3ac5dc40 100644
--- a/tools/idea/build.gradle.kts
+++ b/tools/idea/build.gradle.kts
@@ -23,6 +23,12 @@ javaVersion {
     version = JavaVersion.VERSION_17
 }
 
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(17)
+    }
+}
+
 intellij {
     version = libs.versions.idea.asProvider().get()
     type = "IC"