diff --git a/.github/workflows/mix-test.yml b/.github/workflows/mix-test.yml
index 83a6dca..ee910d9 100644
--- a/.github/workflows/mix-test.yml
+++ b/.github/workflows/mix-test.yml
@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - master
+      - '**'
   pull_request:
     branches:
       - '**'
@@ -13,11 +14,25 @@ env:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     strategy:
       matrix:
-        otp: ['26.2.4']
-        elixir: ['1.16.3']
+        include:
+          - elixir: '1.4.5'
+            otp: '19.2'
+          - elixir: '1.5.0'
+            otp: '20.0'
+          # - elixir: '1.13.4'
+          #   otp: '25.3'
+          # - elixir: '1.14.5'
+          #   otp: '26.2'
+          # - elixir: '1.15.8'
+          #   otp: '26.2'
+          # - elixir: '1.16.3'
+          #   otp: '26.2'
+          # - elixir: '1.17.2'
+          #   otp: '27.0'
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
diff --git a/.tool-versions b/.tool-versions
index 2a0d4b0..ecec375 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,2 +1,2 @@
-erlang 26.2.1
-elixir 1.16.3-otp-26
+erlang 27.0.1
+elixir 1.17.2-otp-26