diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index db1ad05..a4b38c2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,10 +8,14 @@ jobs:
     strategy:
       matrix:
         include:
-          - elixir: 1.13.x
-            otp: 24
-          - elixir: 1.14.x
-            otp: 25
+          - elixir: "1.13.x"
+            otp: "24"
+          - elixir: "1.14.x"
+            otp: "25"
+          - elixir: "1.16.x"
+            otp: "26"
+          - elixir: "1.17.0-rc.0"
+            otp: "27"
     steps:
       - uses: actions/checkout@v2
       - uses: erlef/setup-beam@v1