diff --git a/build.gradle b/build.gradle
index 797c6c4a..5d0c687f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -97,7 +97,7 @@ allprojects {
     dependencies {
         // see https://docs.gradle.org/4.1/userguide/dependency_management.html#sec:module_replacement
         implementation 'com.github.groovy-wslite:groovy-wslite:1.1.3'
-        implementation 'org.codehaus.groovy:groovy-all:3.0.19'
+        implementation 'org.codehaus.groovy:groovy-all:3.0.20'
         implementation 'com.fasterxml.jackson.core:jackson-databind:2.15.3'
         implementation 'com.upplication:s3fs:2.2.2'
 
@@ -106,8 +106,8 @@ allprojects {
         }
         // Documentation required libraries
         groovyDoc 'org.fusesource.jansi:jansi:2.4.1'
-        groovyDoc 'org.codehaus.groovy:groovy-groovydoc:3.0.19'
-        groovyDoc 'org.codehaus.groovy:groovy-ant:3.0.19'
+        groovyDoc 'org.codehaus.groovy:groovy-groovydoc:3.0.20'
+        groovyDoc 'org.codehaus.groovy:groovy-ant:3.0.20'
     }
 
     test {
diff --git a/plugins/nf-quilt/build.gradle b/plugins/nf-quilt/build.gradle
index 1cd4220c..1342bdf7 100644
--- a/plugins/nf-quilt/build.gradle
+++ b/plugins/nf-quilt/build.gradle
@@ -76,10 +76,10 @@ dependencies {
     //testImplementation(testFixtures('black.ninia:jep:4.0.3'))
 
     // test configuration
-    testImplementation "org.codehaus.groovy:groovy:3.0.19"
-    testImplementation "org.codehaus.groovy:groovy-nio:3.0.19"
+    testImplementation "org.codehaus.groovy:groovy:3.0.20"
+    testImplementation "org.codehaus.groovy:groovy-nio:3.0.20"
     testImplementation "io.nextflow:nextflow:$nextflowVersion"
-    testImplementation ("org.codehaus.groovy:groovy-test:3.0.19") { exclude group: 'org.codehaus.groovy' }
+    testImplementation ("org.codehaus.groovy:groovy-test:3.0.20") { exclude group: 'org.codehaus.groovy' }
     testImplementation ("cglib:cglib-nodep:3.3.0")
     testImplementation ("org.objenesis:objenesis:3.3")
     testImplementation ("org.spockframework:spock-core:2.3-groovy-3.0") { exclude group: 'org.codehaus.groovy'; exclude group: 'net.bytebuddy' }