diff --git a/semanticdb-kotlinc/build.gradle.kts b/semanticdb-kotlinc/build.gradle.kts
index bae3a63..c95cdda 100644
--- a/semanticdb-kotlinc/build.gradle.kts
+++ b/semanticdb-kotlinc/build.gradle.kts
@@ -43,13 +43,13 @@ dependencies {
     testImplementation("dev.zacsweers.kctfork", "core", "0.4.0")
 
     testImplementation("org.junit.jupiter", "junit-jupiter-params", "5.8.1")
-    testImplementation("org.jetbrains.kotlin", "kotlin-stdlib-jdk8", "1.5.0") {
+    testImplementation("org.jetbrains.kotlin", "kotlin-stdlib-jdk8", "1.9.23") {
         version {
             strictly("1.5.0")
         }
     }.because("transitive dependencies introduce 1.4.31 to the classpath which conflicts, can't use testRuntimeOnly")
     testImplementation(kotlin("reflect"))
-    testImplementation(kotlin("script-runtime", "1.5.0"))
+    testImplementation(kotlin("script-runtime", "1.9.23"))
 
     snapshotsImplementation("com.sourcegraph", "scip-java_2.13", "0.8.24")
 }