diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 828ed4b..2856326 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: 1.60.0
+          toolchain: 1.64.0
           override: true
       - run: rustup component add rustfmt
       - uses: actions-rs/cargo@v1
@@ -31,7 +31,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.60.0
+          toolchain: 1.64.0
           components: clippy
           override: true
       - uses: actions-rs/clippy-check@v1
@@ -68,9 +68,9 @@ jobs:
       matrix:
         include:
           - os: ubuntu-latest
-            rust: 1.60.0
+            rust: 1.64.0
           - os: windows-latest
-            rust: 1.60.0
+            rust: 1.64.0
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@master
diff --git a/rust-toolchain b/rust-toolchain
index af92bdd..9405730 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-1.63.0
+1.64.0