diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 17d5eece..f3ed64a3 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -51,7 +51,7 @@ mockk = "io.mockk:mockk:1.14.6"
 diff-utils = "io.github.java-diff-utils:java-diff-utils:4.16"
 
 groovy-bom = "org.apache.groovy:groovy-bom:4.0.28"
-spock = "org.spockframework:spock-core:2.4-M6-groovy-4.0"
+spock = "org.spockframework:spock-core:2.5-groovy-5.0-SNAPSHOT"
 
 # for buildSrc convention plugins
 plugin-build = { module = "io.openapiprocessor:build-plugins", version.ref = "build-plugins" }