diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 461c35e..814858d 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,9 +1,8 @@
 [versions]
-kotlin = "2.3.21"
-spockk = "0.3.2"
+kotlin = "2.4.0"
+spockk = "0.4.0"
 
 [libraries]
-spock-core = { module = "org.spockframework:spock-core", version = "2.4-groovy-5.0" }
 spockk-core = { module = "io.github.pshevche.spockk:spockk-core", version.ref = "spockk" }
 junit-platform-launcher = { module = "org.junit.platform:junit-platform-launcher", version = "6.1.1" }
 
diff --git a/lib/build.gradle.kts b/lib/build.gradle.kts
index ff6d5af..de618f7 100644
--- a/lib/build.gradle.kts
+++ b/lib/build.gradle.kts
@@ -14,7 +14,6 @@ repositories {
 
 dependencies {
     testImplementation(kotlin("test"))
-    testImplementation(libs.spock.core)
     testImplementation(libs.spockk.core)
     testRuntimeOnly(libs.junit.platform.launcher)
 }