diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index cd3e59f..74f4a6d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -17,6 +17,9 @@ jobs:
   buildOnMac:
     runs-on: macos-latest
     timeout-minutes: 20
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+      cancel-in-progress: true
 
     steps:
       - uses: actions/checkout@v2
@@ -48,6 +51,9 @@ jobs:
   buildOnWindows:
     runs-on: windows-2019
     timeout-minutes: 20
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+      cancel-in-progress: true
 
     steps:
       - uses: actions/checkout@v2
@@ -86,6 +92,9 @@ jobs:
   buildOnLinux:
     runs-on: ubuntu-latest
     timeout-minutes: 20
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+      cancel-in-progress: true
 
     outputs:
       version: ${{ steps.properties.outputs.version }}
diff --git a/gradle.properties b/gradle.properties
index 061868d..d7a703f 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,7 +1,7 @@
 kotlin.code.style=official
 
 cliGroup=com.sourceplusplus
-projectVersion=0.4.4
+projectVersion=0.4.5
 
 vertxVersion=4.2.4
 graalVersion = 21.3.0