diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9362827..dc11b03 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,11 +10,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Checkout Code
-        uses: actions/checkout@v5
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
-      - name: Set up Java
-        uses: actions/setup-java@v5
+      - uses: actions/setup-java@de7274f081f381c8f8158605e0321c36c376e2e6 # v6.0.1
         with:
           distribution: 'temurin'
           java-version: '8'
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 960613d..2d92f0b 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -7,11 +7,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Checkout Code
-        uses: actions/checkout@v5
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
-      - name: Set up Java
-        uses: actions/setup-java@v5
+      - uses: actions/setup-java@de7274f081f381c8f8158605e0321c36c376e2e6 # v6.0.1
         with:
           distribution: 'temurin'
           java-version: '8'
diff --git a/.github/workflows/github-release.yml b/.github/workflows/github-release.yml
index 816ab46..4eae0f7 100644
--- a/.github/workflows/github-release.yml
+++ b/.github/workflows/github-release.yml
@@ -17,8 +17,7 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Create GitHub Release
         env:
diff --git a/pom.xml b/pom.xml
index 113d78a..32bf489 100644
--- a/pom.xml
+++ b/pom.xml
@@ -8,7 +8,7 @@
     <artifactId>j2mod</artifactId>
     <name>j2mod</name>
     <url>https://github.com/OpenEMS/j2mod</url>
-    <version>3.4.0-openems.1</version>
+    <version>3.4.0-openems.2-SNAPSHOT</version>
     <description>A Modbus TCP/UDP/Serial Master and Slave implementation</description>
 
     <packaging>bundle</packaging>