diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9a68824..d8626c1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,7 +31,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        rust: ["1.56.0", "stable", "nightly"]
+        rust: ["1.70.0", "stable", "nightly"]
         os: ["ubuntu-latest", "windows-latest", "macos-latest"]
     runs-on: ${{ matrix.os }}
     steps: