diff --git a/.github/workflows/alpine.yml b/.github/workflows/alpine.yml
index b77fd44..6fdc85c 100644
--- a/.github/workflows/alpine.yml
+++ b/.github/workflows/alpine.yml
@@ -18,7 +18,7 @@ jobs:
           - riscv64
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.1
 
       - name: Install latest Alpine Linux for ${{ matrix.arch }}
         uses: jirutka/setup-alpine@v1
diff --git a/.github/workflows/amalgamate-ubuntu24.yml b/.github/workflows/amalgamate-ubuntu24.yml
index db822cb..0353dc6 100644
--- a/.github/workflows/amalgamate-ubuntu24.yml
+++ b/.github/workflows/amalgamate-ubuntu24.yml
@@ -6,7 +6,7 @@ jobs:
   ubuntu-build:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       - name: Compile with amalgamation
         run: |
           mkdir build &&
diff --git a/.github/workflows/cifuzz.yml b/.github/workflows/cifuzz.yml
index bd9e1e6..2d0bdaa 100644
--- a/.github/workflows/cifuzz.yml
+++ b/.github/workflows/cifuzz.yml
@@ -20,7 +20,7 @@ jobs:
        fuzz-seconds: 300
        output-sarif: true
    - name: Upload Crash
-     uses: actions/upload-artifact@v5
+     uses: actions/upload-artifact@v6
      if: failure() && steps.build.outcome == 'success'
      with:
        name: artifacts
diff --git a/.github/workflows/emscripten.yml b/.github/workflows/emscripten.yml
index e5ddb06..9f8f07b 100644
--- a/.github/workflows/emscripten.yml
+++ b/.github/workflows/emscripten.yml
@@ -4,13 +4,13 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v4.2.2
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4.2.2
       - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6.1.0
       - uses: mymindstorm/setup-emsdk@6ab9eb1bda2574c4ddb79809fc9247783eaf9021 # v14
       - name: Verify
         run: emcc -v
       - name: Checkout
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v3.6.0
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v3.6.0
       - name: Configure
         run: emcmake cmake -B build
       - name: Build # We build but do not test
diff --git a/.github/workflows/lint_and_format_check.yml b/.github/workflows/lint_and_format_check.yml
index 164cd22..72f8fa5 100644
--- a/.github/workflows/lint_and_format_check.yml
+++ b/.github/workflows/lint_and_format_check.yml
@@ -24,7 +24,7 @@ jobs:
   lint-and-format:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v4.1.7
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4.1.7
 
       - name: Run clang-format
         uses: jidicula/clang-format-action@6cd220de46c89139a0365edae93eee8eb30ca8fe # v4.16.0
diff --git a/.github/workflows/msys2-clang.yml b/.github/workflows/msys2-clang.yml
index d263b6d..59baaf1 100644
--- a/.github/workflows/msys2-clang.yml
+++ b/.github/workflows/msys2-clang.yml
@@ -23,7 +23,7 @@ jobs:
       CMAKE_GENERATOR: Ninja
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       - uses: msys2/setup-msys2@v2
         with:
           update: true
diff --git a/.github/workflows/msys2.yml b/.github/workflows/msys2.yml
index 4848f2e..416ef81 100644
--- a/.github/workflows/msys2.yml
+++ b/.github/workflows/msys2.yml
@@ -29,7 +29,7 @@ jobs:
       CMAKE_GENERATOR: Ninja
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       - uses: msys2/setup-msys2@v2
         with:
           update: true
diff --git a/.github/workflows/on-release.yml b/.github/workflows/on-release.yml
index 371cba0..5b78e24 100644
--- a/.github/workflows/on-release.yml
+++ b/.github/workflows/on-release.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       
       - name: Amalgamate fast_float.h
         run: |
diff --git a/.github/workflows/risc.yml b/.github/workflows/risc.yml
index a8f4d39..70e0c19 100644
--- a/.github/workflows/risc.yml
+++ b/.github/workflows/risc.yml
@@ -6,7 +6,7 @@ jobs:
   build:
     runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.1
     - name: Install packages
       run: |
         sudo apt-get update -q -y
diff --git a/.github/workflows/s390x.yml b/.github/workflows/s390x.yml
index 1c703c5..21403a4 100644
--- a/.github/workflows/s390x.yml
+++ b/.github/workflows/s390x.yml
@@ -12,7 +12,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       - uses: uraimo/run-on-arch-action@v3
         name: Test
         id: runcmd
diff --git a/.github/workflows/ubuntu22-clang.yml b/.github/workflows/ubuntu22-clang.yml
index 3e6df05..359aef4 100644
--- a/.github/workflows/ubuntu22-clang.yml
+++ b/.github/workflows/ubuntu22-clang.yml
@@ -6,7 +6,7 @@ jobs:
   ubuntu-build:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       - name: Install clang++-14
         run: sudo apt-get install -y clang++-14
       - name: Use cmake
diff --git a/.github/workflows/ubuntu22-gcc12.yml b/.github/workflows/ubuntu22-gcc12.yml
index b7bba1e..9ea6c99 100644
--- a/.github/workflows/ubuntu22-gcc12.yml
+++ b/.github/workflows/ubuntu22-gcc12.yml
@@ -6,7 +6,7 @@ jobs:
   ubuntu-build:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       - name: Use cmake
         run: |
           mkdir build &&
diff --git a/.github/workflows/ubuntu22-sanitize.yml b/.github/workflows/ubuntu22-sanitize.yml
index c51524e..c31a9fa 100644
--- a/.github/workflows/ubuntu22-sanitize.yml
+++ b/.github/workflows/ubuntu22-sanitize.yml
@@ -6,7 +6,7 @@ jobs:
   ubuntu-build:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       - name: Use cmake
         run: |
           mkdir build &&
diff --git a/.github/workflows/ubuntu22.yml b/.github/workflows/ubuntu22.yml
index c8fb3c1..de4cb7d 100644
--- a/.github/workflows/ubuntu22.yml
+++ b/.github/workflows/ubuntu22.yml
@@ -6,7 +6,7 @@ jobs:
   ubuntu-build:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       - name: Use cmake
         run: |
           mkdir build &&
diff --git a/.github/workflows/ubuntu24-cxx20.yml b/.github/workflows/ubuntu24-cxx20.yml
index c705631..b5e8d20 100644
--- a/.github/workflows/ubuntu24-cxx20.yml
+++ b/.github/workflows/ubuntu24-cxx20.yml
@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       - name: Use cmake
         run: |
           mkdir build &&
diff --git a/.github/workflows/ubuntu24.yml b/.github/workflows/ubuntu24.yml
index 1b99809..3b002f8 100644
--- a/.github/workflows/ubuntu24.yml
+++ b/.github/workflows/ubuntu24.yml
@@ -6,7 +6,7 @@ jobs:
   ubuntu-build:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.1
       - name: Use cmake
         run: |
           set -xe
diff --git a/.github/workflows/vs17-arm-ci.yml b/.github/workflows/vs17-arm-ci.yml
index f4fa84e..bf15121 100644
--- a/.github/workflows/vs17-arm-ci.yml
+++ b/.github/workflows/vs17-arm-ci.yml
@@ -14,7 +14,7 @@ jobs:
           - {gen: Visual Studio 17 2022, arch: ARM64, cfg: Debug}
     steps:
       - name: checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.1
       - name: configure
         run: |
           cmake -S . -B build -G "${{matrix.gen}}" -A ${{matrix.arch}} -DCMAKE_CROSSCOMPILING=1 -DFASTFLOAT_TEST=ON
diff --git a/.github/workflows/vs17-ci.yml b/.github/workflows/vs17-ci.yml
index 98ed5ce..10a4c0a 100644
--- a/.github/workflows/vs17-ci.yml
+++ b/.github/workflows/vs17-ci.yml
@@ -16,7 +16,7 @@ jobs:
           - {gen: Visual Studio 17 2022, arch: x64, cfg: Debug}
     steps:
       - name: checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.1
       - name: configure
         run: |
           cmake -S . -B build -G "${{matrix.gen}}" -A ${{matrix.arch}} -DFASTFLOAT_BENCHMARKS=ON  -DFASTFLOAT_TEST=ON -DCMAKE_INSTALL_PREFIX:PATH=destination
diff --git a/.github/workflows/vs17-clang-ci.yml b/.github/workflows/vs17-clang-ci.yml
index 31b3a4b..ac9de08 100644
--- a/.github/workflows/vs17-clang-ci.yml
+++ b/.github/workflows/vs17-clang-ci.yml
@@ -16,7 +16,7 @@ jobs:
           - {gen: Visual Studio 17 2022, arch: x64, cfg: Debug}
     steps:
       - name: checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.1
       - name: Configure
         run: |
           cmake -S . -B build -G "${{matrix.gen}}" -A ${{matrix.arch}} -DFASTFLOAT_BENCHMARKS=ON -T ClangCL -DFASTFLOAT_TEST=ON
diff --git a/.github/workflows/vs17-cxx20.yml b/.github/workflows/vs17-cxx20.yml
index 93b7a89..85544c3 100644
--- a/.github/workflows/vs17-cxx20.yml
+++ b/.github/workflows/vs17-cxx20.yml
@@ -16,7 +16,7 @@ jobs:
           - {gen: Visual Studio 17 2022, arch: x64, cfg: Debug}
     steps:
       - name: checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.1
       - name: configure
         run: >-
           cmake -S . -B build -G "${{matrix.gen}}" -A ${{matrix.arch}}