diff --git a/.github/workflows/artifacts.yaml b/.github/workflows/artifacts.yaml
index 142cab45..18f0e81d 100644
--- a/.github/workflows/artifacts.yaml
+++ b/.github/workflows/artifacts.yaml
@@ -16,7 +16,7 @@ jobs:
     name: Windows (x86_64 MSVC)
     runs-on: windows-2022 # x86_64
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -48,7 +48,7 @@ jobs:
     name: Linux (x86_64 GNU)
     runs-on: ubuntu-22.04 # x86_64.
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -79,7 +79,7 @@ jobs:
     name: Linux (x86-64 GNU Deb)
     runs-on: ubuntu-22.04 # x86_64.
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -106,7 +106,7 @@ jobs:
     name: MacOS (Arm64 and x86_64)
     runs-on: macos-14 # arm64.
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -175,7 +175,7 @@ jobs:
             artifact: rustls-ffi-x86_64-macos
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
       - name: Download rustls-ffi artifact
@@ -273,7 +273,7 @@ jobs:
         os: [ ubuntu-latest, ubuntu-22.04 ]
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
       - name: Download rustls-ffi deb artifact
diff --git a/.github/workflows/daily-tests.yml b/.github/workflows/daily-tests.yml
index 7db247f0..fb02b703 100644
--- a/.github/workflows/daily-tests.yml
+++ b/.github/workflows/daily-tests.yml
@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -77,7 +77,7 @@ jobs:
 
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -140,7 +140,7 @@ jobs:
 
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/docs.yaml b/.github/workflows/docs.yaml
index c933911e..8f95d25d 100644
--- a/.github/workflows/docs.yaml
+++ b/.github/workflows/docs.yaml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 953c7c92..40ba346e 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -80,7 +80,7 @@ jobs:
             prefer-pq: on
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -155,7 +155,7 @@ jobs:
     name: Valgrind
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -179,11 +179,11 @@ jobs:
     name: FIPS
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           persist-credentials: false
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -230,7 +230,7 @@ jobs:
             config: Release
             prefer-pq: on
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -267,7 +267,7 @@ jobs:
   ensure-header-updated:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -297,7 +297,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -314,7 +314,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -332,7 +332,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -347,7 +347,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -370,7 +370,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -394,7 +394,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -419,7 +419,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
 
@@ -434,7 +434,7 @@ jobs:
       MIRIFLAGS: -Zmiri-disable-isolation
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false