diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 6bc013e..773e94a 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -28,7 +28,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
 
       - name: Setup Elixir
         uses: stordco/actions-elixir/setup@v1
@@ -43,7 +43,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
 
       - name: Setup Elixir
         uses: stordco/actions-elixir/setup@v1
@@ -58,7 +58,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
 
       - name: Setup Elixir
         uses: stordco/actions-elixir/setup@v1
@@ -73,7 +73,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
 
       - name: Setup Elixir
         uses: stordco/actions-elixir/setup@v1
@@ -93,7 +93,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
 
       - name: Setup Elixir
         uses: stordco/actions-elixir/setup@v1
@@ -112,11 +112,10 @@ jobs:
       fail-fast: false
       matrix:
         versions:
-          - elixir: 1.16
-            otp: 26
           - elixir: 1.17
             otp: 27
           - elixir: 1.18
             otp: 27
           - elixir: 1.19
-            otp: 28
+            otp: 27
+
diff --git a/.github/workflows/common-config.yaml b/.github/workflows/common-config.yaml
index 3931beb..897e53f 100644
--- a/.github/workflows/common-config.yaml
+++ b/.github/workflows/common-config.yaml
@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
         with:
           token: ${{ secrets.GH_PERSONAL_ACCESS_TOKEN }}
           persist-credentials: true
diff --git a/.github/workflows/production.yaml b/.github/workflows/production.yaml
index 92bfb8c..038c5b9 100644
--- a/.github/workflows/production.yaml
+++ b/.github/workflows/production.yaml
@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
 
       - name: Setup Elixir
         uses: stordco/actions-elixir/setup@v1
diff --git a/.github/workflows/publish-docs.yaml b/.github/workflows/publish-docs.yaml
index a2d6761..a425b30 100644
--- a/.github/workflows/publish-docs.yaml
+++ b/.github/workflows/publish-docs.yaml
@@ -15,7 +15,7 @@ jobs:
     if: github.ref == 'refs/heads/main'
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
 
       - name: Setup Elixir
         uses: stordco/actions-elixir/setup@v1
diff --git a/.tool-versions b/.tool-versions
index fe6dc8b..c6d4122 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,2 +1,2 @@
-elixir 1.18
-erlang 27.2
+elixir 1.19-otp-27
+erlang 27.3