diff --git a/.github/github_workflows.ex b/.github/github_workflows.ex
index b6459f2..a6900ec 100644
--- a/.github/github_workflows.ex
+++ b/.github/github_workflows.ex
@@ -105,6 +105,13 @@ defmodule GithubWorkflows do
   end
 
   defp elixir_job(name, opts) do
+    matrix =
+      Keyword.get(opts, :matrix,
+        versions: [
+          latest_versions_matrix()
+        ]
+      )
+
     needs = Keyword.get(opts, :needs)
     steps = Keyword.get(opts, :steps, [])
 
@@ -113,20 +120,7 @@ defmodule GithubWorkflows do
       "runs-on": "${{ matrix.versions.runner-image }}",
       strategy: [
         "fail-fast": false,
-        matrix: [
-          versions: [
-            [
-              elixir: "1.11",
-              otp: "21.3",
-              "runner-image": "ubuntu-20.04"
-            ],
-            [
-              elixir: "1.17",
-              otp: "27.0",
-              "runner-image": "ubuntu-latest"
-            ]
-          ]
-        ]
+        matrix: matrix
       ],
       steps:
         [
@@ -215,6 +209,16 @@ defmodule GithubWorkflows do
 
   defp test_job do
     elixir_job("Test",
+      matrix: [
+        versions: [
+          [
+            elixir: "1.11",
+            otp: "21.3",
+            "runner-image": "ubuntu-20.04"
+          ],
+          latest_versions_matrix()
+        ]
+      ],
       needs: :compile,
       steps: [
         [
@@ -248,6 +252,14 @@ defmodule GithubWorkflows do
     ]
   end
 
+  defp latest_versions_matrix do
+    [
+      elixir: "1.17",
+      otp: "27.0",
+      "runner-image": "ubuntu-latest"
+    ]
+  end
+
   defp cache_opts(opts) do
     prefix = Keyword.get(opts, :prefix)
 
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4a8d58e..898f941 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,9 +14,6 @@ jobs:
       fail-fast: false
       matrix:
         versions:
-          - elixir: 1.11
-            otp: 21.3
-            runner-image: ubuntu-20.04
           - elixir: 1.17
             otp: 27.0
             runner-image: ubuntu-latest
@@ -52,9 +49,6 @@ jobs:
       fail-fast: false
       matrix:
         versions:
-          - elixir: 1.11
-            otp: 21.3
-            runner-image: ubuntu-20.04
           - elixir: 1.17
             otp: 27.0
             runner-image: ubuntu-latest
@@ -86,9 +80,6 @@ jobs:
       fail-fast: false
       matrix:
         versions:
-          - elixir: 1.11
-            otp: 21.3
-            runner-image: ubuntu-20.04
           - elixir: 1.17
             otp: 27.0
             runner-image: ubuntu-latest
@@ -120,9 +111,6 @@ jobs:
       fail-fast: false
       matrix:
         versions:
-          - elixir: 1.11
-            otp: 21.3
-            runner-image: ubuntu-20.04
           - elixir: 1.17
             otp: 27.0
             runner-image: ubuntu-latest
@@ -165,9 +153,6 @@ jobs:
       fail-fast: false
       matrix:
         versions:
-          - elixir: 1.11
-            otp: 21.3
-            runner-image: ubuntu-20.04
           - elixir: 1.17
             otp: 27.0
             runner-image: ubuntu-latest
@@ -199,9 +184,6 @@ jobs:
       fail-fast: false
       matrix:
         versions:
-          - elixir: 1.11
-            otp: 21.3
-            runner-image: ubuntu-20.04
           - elixir: 1.17
             otp: 27.0
             runner-image: ubuntu-latest
@@ -284,9 +266,6 @@ jobs:
       fail-fast: false
       matrix:
         versions:
-          - elixir: 1.11
-            otp: 21.3
-            runner-image: ubuntu-20.04
           - elixir: 1.17
             otp: 27.0
             runner-image: ubuntu-latest
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 029b53f..7383eeb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.1.3
+
+- Fixed CI by only running tests on the old version of Elixir (Credo requires version 1.13 at least).
+
 ## 0.1.2 (2024-06-21)
 
 - Removed `fast_yaml` dependency.