diff --git a/.github/workflows/acceptance.yml b/.github/workflows/acceptance.yml
index 0c984f8..7471def 100644
--- a/.github/workflows/acceptance.yml
+++ b/.github/workflows/acceptance.yml
@@ -16,14 +16,14 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: fetch crystal version
         id: crystal-version
         run: echo "crystal=$(cat .crystal-version)" >> $GITHUB_OUTPUT
 
       - name: install crystal
-        uses: crystal-lang/install-crystal@v1.8.2
+        uses: crystal-lang/install-crystal@v1.8.3
         with:
           crystal: ${{ steps.crystal-version.outputs.crystal }}
 
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1d93749..68b04ff 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -19,14 +19,14 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: fetch crystal version
         id: crystal-version
         run: echo "crystal=$(cat .crystal-version)" >> $GITHUB_OUTPUT
 
       - name: install crystal
-        uses: crystal-lang/install-crystal@v1.8.2
+        uses: crystal-lang/install-crystal@v1.8.3
         with:
           crystal: ${{ steps.crystal-version.outputs.crystal }}
 
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 2fb6067..bd77868 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -15,14 +15,14 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: fetch crystal version
         id: crystal-version
         run: echo "crystal=$(cat .crystal-version)" >> $GITHUB_OUTPUT
 
       - name: install crystal
-        uses: crystal-lang/install-crystal@v1.8.2
+        uses: crystal-lang/install-crystal@v1.8.3
         with:
           crystal: ${{ steps.crystal-version.outputs.crystal }}
 
@@ -36,7 +36,7 @@ jobs:
 
       - name: upload static files as artifact
         id: deployment
-        uses: actions/upload-pages-artifact@v3.0.1
+        uses: actions/upload-pages-artifact@v4.0.0
         with:
           path: docs/
 
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index fe566e8..90e00b8 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -19,14 +19,14 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: fetch crystal version
         id: crystal-version
         run: echo "crystal=$(cat .crystal-version)" >> $GITHUB_OUTPUT
 
       - name: install crystal
-        uses: crystal-lang/install-crystal@v1.8.2
+        uses: crystal-lang/install-crystal@v1.8.3
         with:
           crystal: ${{ steps.crystal-version.outputs.crystal }}
 
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4301ca7..8daff52 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,14 +19,14 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: fetch crystal version
         id: crystal-version
         run: echo "crystal=$(cat .crystal-version)" >> $GITHUB_OUTPUT
 
       - name: install crystal
-        uses: crystal-lang/install-crystal@v1.8.2
+        uses: crystal-lang/install-crystal@v1.8.3
         with:
           crystal: ${{ steps.crystal-version.outputs.crystal }}