diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 3349878d..9e47835d 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: libGMP
       run: wget --progress=dot:mega https://gmplib.org/download/gmp/gmp-6.2.1.tar.bz2 ; tar xjf gmp-6.2.1.tar.bz2 ; cd gmp-6.2.1 ; ./configure --enable-cxx --enable-fat --prefix=$(pwd)/../usr/local  --build=westmere-pc-linux-gnu ; make -j ; make install ; cd .. ;    
     - name: libExpat
diff --git a/.github/workflows/osx.yml b/.github/workflows/osx.yml
index 4c55dd43..a29f7928 100644
--- a/.github/workflows/osx.yml
+++ b/.github/workflows/osx.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: macos-latest
     
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install packages
       run: brew install gcc@11 autoconf automake libtool binutils bison flex ;    
     - name: Check Version
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 8e7d9334..c8ccb54c 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: windows-latest
     
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: actions/setup-java@v3
       with:
         distribution: 'adopt'
@@ -54,7 +54,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout 
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           persist-credentials: false