diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1ffabe9..1a9dc4b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,6 +25,7 @@ jobs:
     strategy:
       matrix:
         rust:
+          - 1.63.0
           - stable
           - beta
           - nightly