diff --git a/alice/build.gradle b/alice/build.gradle
index cfaa226..60dd399 100644
--- a/alice/build.gradle
+++ b/alice/build.gradle
@@ -19,7 +19,7 @@ group = 'to.wetransform'
 dependencies {
     implementation "org.codehaus.groovy:groovy-all:2.5.23"
 
-    testImplementation 'org.spockframework:spock-core:1.3-groovy-2.5'
+    testImplementation 'org.spockframework:spock-core:2.3-groovy-4.0'
     testImplementation group: 'commons-io', name: 'commons-io', version: '2.17.0'
     testImplementation group: 'org.apache.commons', name: 'commons-lang3', version: '3.17.0'
     testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-engine', version: '5.11.3'