diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d73c4eb..65b6c53 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,9 +29,6 @@ jobs:
           - rust: nightly
             features: serde
             experimental: false
-          - rust: nightly
-            features: serde unstable-const-fn
-            experimental: true
 
     steps:
       - uses: actions/checkout@v2