diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 466747b2..fd5300a5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -240,7 +240,7 @@ jobs:
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: "1.61"
+          toolchain: "1.63"
       - run: cargo check --locked --lib --all-features
 
   cross:
diff --git a/Cargo.toml b/Cargo.toml
index 51618e6c..ad0e50a2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@
 categories = ["cryptography", "no-std"]
 description = "Web PKI X.509 Certificate Verification."
 edition = "2021"
-rust-version = "1.61"
+rust-version = "1.63"
 license = "ISC"
 name = "rustls-webpki"
 readme = "README.md"