diff --git a/build.gradle b/build.gradle
index f45d043..8f56e74 100755
--- a/build.gradle
+++ b/build.gradle
@@ -21,7 +21,7 @@ dependencies {
 
     implementation 'io.github.scottg489:regex-directed-graph-line-parser:0.3.4'
 
-    testImplementation 'org.spockframework:spock-core:1.0-groovy-2.4'
+    testImplementation 'org.spockframework:spock-core:1.3-groovy-2.5'
     testImplementation 'junit:junit:4.13.2'
 }