diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 95e20c9..8654c25 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -20,8 +20,8 @@ jobs:
         run: ./gradlew check
       - name: Publish to Maven Central
         env:
-          ORG_GRADLE_PROJECT_signingKey: ${{ secrets.SIGN_KEY }}
-          ORG_GRADLE_PROJECT_signingPassword: ${{ secrets.SIGN_KEY_PASS }}
+          ORG_GRADLE_PROJECT_signingKey: ${{ secrets.SIGNING_KEY }}
+          ORG_GRADLE_PROJECT_signingPassword: ${{ secrets.SIGNING_PASSWORD }}
           ORG_GRADLE_PROJECT_sonatypeUsername: ${{ secrets.SONATYPE_USERNAME }}
           ORG_GRADLE_PROJECT_sonatypePassword: ${{ secrets.SONATYPE_PASSWORD }}
         run: ./gradlew publishToSonatype closeAndReleaseSonatypeStagingRepository
diff --git a/build.gradle.kts b/build.gradle.kts
index c1af1cd..3740e3c 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -18,41 +18,41 @@ plugins {
 }
 
 plugins.withId("com.hivemq.version-updater") {
-    project.ext.set("versionUpdaterFiles", arrayOf("README.adoc"))
+    project.ext["versionUpdaterFiles"] = arrayOf("README.adoc")
 }
 
 group = "com.hivemq"
 description = "SDK for the development of HiveMQ extensions"
 
 metadata {
-    readableName.set("HiveMQ Extension SDK")
+    readableName = "HiveMQ Extension SDK"
     organization {
-        name.set("HiveMQ GmbH")
-        url.set("https://www.hivemq.com/")
+        name = "HiveMQ GmbH"
+        url = "https://www.hivemq.com/"
     }
     license {
         apache2()
     }
     developers {
         register("cschaebe") {
-            fullName.set("Christoph Schaebel")
-            email.set("christoph.schaebel@hivemq.com")
+            fullName = "Christoph Schaebel"
+            email = "christoph.schaebel@hivemq.com"
         }
         register("lbrandl") {
-            fullName.set("Lukas Brandl")
-            email.set("lukas.brandl@hivemq.com")
+            fullName = "Lukas Brandl"
+            email = "lukas.brandl@hivemq.com"
         }
         register("flimpoeck") {
-            fullName.set("Florian Limpoeck")
-            email.set("florian.limpoeck@hivemq.com")
+            fullName = "Florian Limpoeck"
+            email = "florian.limpoeck@hivemq.com"
         }
         register("sauroter") {
-            fullName.set("Georg Held")
-            email.set("georg.held@hivemq.com")
+            fullName = "Georg Held"
+            email = "georg.held@hivemq.com"
         }
         register("SgtSilvio") {
-            fullName.set("Silvio Giebl")
-            email.set("silvio.giebl@hivemq.com")
+            fullName = "Silvio Giebl"
+            email = "silvio.giebl@hivemq.com"
         }
     }
     github {
@@ -73,7 +73,7 @@ dependencies {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(11))
+        languageVersion = JavaLanguageVersion.of(11)
     }
     withJavadocJar()
     withSourcesJar()