diff --git a/.github/workflows/main.linux.temurin.current.yml b/.github/workflows/main.linux.temurin.current.yml
index 71d5aff..1541d3e 100644
--- a/.github/workflows/main.linux.temurin.current.yml
+++ b/.github/workflows/main.linux.temurin.current.yml
@@ -10,16 +10,16 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: JDK
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           java-version: 22
           distribution: 'temurin'
       - name: Build
         run: mvn --errors clean verify site
       - name: Upload test logs
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: always()
         with:
           name: test-logs
diff --git a/.github/workflows/main.linux.temurin.lts.yml b/.github/workflows/main.linux.temurin.lts.yml
index 69f369b..dbc562d 100644
--- a/.github/workflows/main.linux.temurin.lts.yml
+++ b/.github/workflows/main.linux.temurin.lts.yml
@@ -10,21 +10,21 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: JDK
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           java-version: 21
           distribution: 'temurin'
       - name: Build
         run: mvn --errors clean verify site
       - name: Upload test logs
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: always()
         with:
           name: test-logs
           path: ./com.io7m.jptbox.tests/target/surefire-reports
       - name: Coverage
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v4
         with:
           file: com.io7m.jptbox.tests/target/site/jacoco-aggregate/jacoco.xml
diff --git a/.github/workflows/main.windows.temurin.current.yml b/.github/workflows/main.windows.temurin.current.yml
index 2d6823b..13de522 100644
--- a/.github/workflows/main.windows.temurin.current.yml
+++ b/.github/workflows/main.windows.temurin.current.yml
@@ -10,16 +10,16 @@ jobs:
   build:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: JDK
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           java-version: 22
           distribution: 'temurin'
       - name: Build
         run: mvn --errors clean verify site
       - name: Upload test logs
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: always()
         with:
           name: test-logs
diff --git a/.github/workflows/main.windows.temurin.lts.yml b/.github/workflows/main.windows.temurin.lts.yml
index b7ef624..b5eebbc 100644
--- a/.github/workflows/main.windows.temurin.lts.yml
+++ b/.github/workflows/main.windows.temurin.lts.yml
@@ -10,16 +10,16 @@ jobs:
   build:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: JDK
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           java-version: 21
           distribution: 'temurin'
       - name: Build
         run: mvn --errors clean verify site
       - name: Upload test logs
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: always()
         with:
           name: test-logs