diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3fbc395f..c055b547 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     env:
       MIX_ENV: test
       PLUG_CRYPTO_2_0: "${{ matrix.PLUG_CRYPTO_2_0 }}"
@@ -17,8 +17,8 @@ jobs:
       matrix:
         include:
           # Earliest-supported Elixir/Erlang pair.
-          - elixir: "1.10.4"
-            otp: "21.3"
+          - elixir: "1.12"
+            otp: "24.3"
             PLUG_CRYPTO_2_0: "false"
 
           # Latest-supported Elixir/Erlang pair.