diff --git a/alice/build.gradle b/alice/build.gradle
index 2681427..6aaedcb 100644
--- a/alice/build.gradle
+++ b/alice/build.gradle
@@ -8,13 +8,13 @@ sourceCompatibility = JavaVersion.VERSION_1_8
 targetCompatibility = JavaVersion.VERSION_1_8
 
 dependencies {
-    compile "org.codehaus.groovy:groovy-all:2.4.1"
+    compile "org.codehaus.groovy:groovy-all:2.5.23"
 
-    testCompile 'org.spockframework:spock-core:1.1-groovy-2.4-rc-3'
-    testCompile group: 'commons-io', name: 'commons-io', version: '2.5'
-    testCompile group: 'org.apache.commons', name: 'commons-lang3', version: '3.5'
-    testCompile group: 'org.junit.jupiter', name: 'junit-jupiter-engine', version: '5.0.0-M3'
-    testRuntime group: 'org.junit.vintage', name: 'junit-vintage-engine', version: '4.12.0-M3'
+    testCompile 'org.spockframework:spock-core:1.3-groovy-2.5'
+    testCompile group: 'commons-io', name: 'commons-io', version: '2.17.0'
+    testCompile group: 'org.apache.commons', name: 'commons-lang3', version: '3.17.0'
+    testCompile group: 'org.junit.jupiter', name: 'junit-jupiter-engine', version: '5.11.3'
+    testRuntime group: 'org.junit.vintage', name: 'junit-vintage-engine', version: '4.12.3'
 }
 
 task copyDocs(dependsOn: 'javadoc', type: Copy) {