diff --git a/.github/workflows/bcload.yml b/.github/workflows/bcload.yml
index c278f0621..8f254d597 100644
--- a/.github/workflows/bcload.yml
+++ b/.github/workflows/bcload.yml
@@ -23,7 +23,7 @@ jobs:
           sudo apt-add-repository "deb http://apt.llvm.org/`lsb_release -c | cut -f2`/ llvm-toolchain-`lsb_release -c | cut -f2`-${{ matrix.llvm }} main" || true
           sudo apt-get install -y cmake gcc g++ llvm-${{ matrix.llvm }}-dev clang-${{ matrix.llvm }} libclang-${{ matrix.llvm }}-dev
           sudo python3 -m pip install --upgrade pip lit
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: mkdir
       run: cd enzyme && rm -rf build && mkdir build
     - name: cmake
diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 1d875a6aa..7ce596ed3 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -33,7 +33,7 @@ jobs:
           sudo apt-get install -y python3-pip autoconf cmake gcc g++ libtool gfortran libblas-dev llvm-${{ matrix.llvm }}-dev clang-${{ matrix.llvm }} libeigen3-dev libboost-dev libzstd-dev
           sudo python3 -m pip install lit pathlib
           sudo touch /usr/lib/llvm-${{ matrix.llvm }}/bin/yaml-bench
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: mkdir
       run: rm -rf build && mkdir build
     - name: cmake
diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
index 32189e606..b79d730f8 100644
--- a/.github/workflows/ccpp.yml
+++ b/.github/workflows/ccpp.yml
@@ -31,7 +31,7 @@ jobs:
           sudo apt-add-repository "deb http://apt.llvm.org/`lsb_release -c | cut -f2`/ llvm-toolchain-`lsb_release -c | cut -f2`-${{ matrix.llvm }} main" || true
           sudo apt-get install -y cmake gcc g++ llvm-${{ matrix.llvm }}-dev libomp-${{ matrix.llvm }}-dev lld-${{ matrix.llvm }} clang-${{ matrix.llvm }} libclang-${{ matrix.llvm }}-dev libeigen3-dev libboost-dev libzstd-dev
           sudo python3 -m pip install --upgrade pip lit
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: mkdir
       run: rm -rf build && mkdir build
     - name: cmake
diff --git a/.github/workflows/doxygen.yml b/.github/workflows/doxygen.yml
index f18122ca2..886620147 100644
--- a/.github/workflows/doxygen.yml
+++ b/.github/workflows/doxygen.yml
@@ -9,7 +9,7 @@ jobs:
   docs:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - uses: mattnotmitt/doxygen-action@v1.12.0
         with:
diff --git a/.github/workflows/enzyme-bazel.yml b/.github/workflows/enzyme-bazel.yml
index 15a35e1b6..9cbcad6a9 100644
--- a/.github/workflows/enzyme-bazel.yml
+++ b/.github/workflows/enzyme-bazel.yml
@@ -50,8 +50,8 @@ jobs:
     steps:
       - name: Install Python dependencies
         run: python -m pip install lit
-      - uses: actions/checkout@v4
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
+      - uses: actions/checkout@v5
         with:
           repository: 'llvm/llvm-project'
           path: 'llvm-project'
diff --git a/.github/workflows/enzyme-ci.yml b/.github/workflows/enzyme-ci.yml
index 371ef41aa..a70aba9f2 100644
--- a/.github/workflows/enzyme-ci.yml
+++ b/.github/workflows/enzyme-ci.yml
@@ -28,7 +28,7 @@ jobs:
           sudo apt-add-repository "deb http://apt.llvm.org/`lsb_release -c | cut -f2`/ llvm-toolchain-`lsb_release -c | cut -f2`-${{ matrix.llvm }} main" || true
           sudo apt-get install -y cmake gcc g++ llvm-${{ matrix.llvm }}-dev libzstd-dev
           sudo python3 -m pip install --upgrade pip lit
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: mkdir
       run: rm -rf build && mkdir build
     - name: cmake
@@ -64,7 +64,7 @@ jobs:
           brew update
           brew install llvm@${{ matrix.llvm }} make cmake
           sudo python3 -m pip install --upgrade --break-system-packages --user pip lit requests
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: mkdir
       run: rm -rf build && mkdir build
     - name: cmake
@@ -99,7 +99,7 @@ jobs:
       run: |
           brew install llvm@${{ matrix.llvm }} make cmake gcc
           sudo python3 -m pip install --upgrade --break-system-packages --user pip lit
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: mkdir
       run: rm -rf build && mkdir build
     - name: cmake
diff --git a/.github/workflows/enzyme-julia.yml b/.github/workflows/enzyme-julia.yml
index 6ae9f3d0f..097a61528 100644
--- a/.github/workflows/enzyme-julia.yml
+++ b/.github/workflows/enzyme-julia.yml
@@ -26,8 +26,8 @@ jobs:
           - x64
     timeout-minutes: 60 
     steps:
-    - uses: actions/checkout@v4
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
+    - uses: actions/checkout@v5
       with:
         repository: 'EnzymeAD/Enzyme.jl'
         path: ./jl
diff --git a/.github/workflows/enzyme-mlir.yml b/.github/workflows/enzyme-mlir.yml
index 75b151875..d81d12ffa 100644
--- a/.github/workflows/enzyme-mlir.yml
+++ b/.github/workflows/enzyme-mlir.yml
@@ -29,11 +29,11 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y binutils ninja-build cmake gcc g++ python3 python3-dev
 
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
       with:
         path: 'Enzyme'
 
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
       with:
         repository: 'llvm/llvm-project'
         ref: '8d8a3d9fdcbe823b94e2821b7beb8ead5288b14e'
diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index 93468da2b..1277696fe 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - uses: DoozyX/clang-format-lint-action@v0.20
       with:
         source: 'enzyme/Enzyme enzyme/tools/enzyme-tblgen'
diff --git a/.github/workflows/fortran.yml b/.github/workflows/fortran.yml
index 94ef0d174..11523c5bd 100644
--- a/.github/workflows/fortran.yml
+++ b/.github/workflows/fortran.yml
@@ -66,7 +66,7 @@ jobs:
         sudo apt-get update && sudo apt-get install -y intel-oneapi-compiler-fortran-${{ matrix.ifx }} intel-oneapi-mpi-${{ matrix.mpi }} intel-oneapi-mpi-devel-${{ matrix.mpi }}
         source /opt/intel/oneapi/setvars.sh
         printenv >> $GITHUB_ENV
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: generate build system
       run: |
         rm -rf build && mkdir build && cd build
diff --git a/.github/workflows/tagger.yml b/.github/workflows/tagger.yml
index 1208b4d3d..59766117a 100644
--- a/.github/workflows/tagger.yml
+++ b/.github/workflows/tagger.yml
@@ -17,12 +17,12 @@ jobs:
         private_key: ${{ secrets.APP_PRIVATE_KEY }}
         repository: JuliaPackaging/Yggdrasil
 
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
       with:
           repository: 'JuliaPackaging/Yggdrasil'
           path: ygg
 
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
       with:
         path: enz
     - name: replace