diff --git a/base/build.gradle b/base/build.gradle
index a052bda6..6a871ca4 100644
--- a/base/build.gradle
+++ b/base/build.gradle
@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "${pluginLombok}"
+    id 'io.freefair.lombok' version '${pluginLombok}'
 }
 
 dependencies {
diff --git a/build.gradle b/build.gradle
index 3d34f949..ff651018 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "${pluginLombok}"
+    id 'io.freefair.lombok' version '${pluginLombok}'
 }
 
 dependencies {
@@ -37,7 +37,7 @@ tasks.register('javadocAll', Javadoc) {
 
 allprojects {
     group = project.group
-    version = project.versioningVersion + "-" + project.versioningType + project.versioningTyperelease + project.versioningFork
+    version = project.versioningVersion + '-' + project.versioningType + project.versioningTyperelease + project.versioningFork
 
     repositories {
         mavenCentral()
diff --git a/testapp/build.gradle b/testapp/build.gradle
index bf20cc11..256bf751 100644
--- a/testapp/build.gradle
+++ b/testapp/build.gradle
@@ -1,8 +1,8 @@
 plugins {
     id 'java'
     id 'application'
-    id "io.freefair.lombok" version "${pluginLombok}"
-    id 'com.github.johnrengelman.shadow' version "${pluginShadow}"
+    id 'io.freefair.lombok' version '${pluginLombok}'
+    id 'com.github.johnrengelman.shadow' version '${pluginShadow}'
 }
 
 dependencies {