diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 650d16d6..9ec82015 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,7 +10,7 @@ jobs:
     - uses: actions-rs/toolchain@v1
       with:
         profile: minimal
-        toolchain: nightly-2020-04-06
+        toolchain: nightly-2020-06-04
         override: true
         components: rustfmt, clippy
     - name: Check code format
@@ -30,7 +30,7 @@ jobs:
     - uses: actions-rs/toolchain@v1
       with:
         profile: minimal
-        toolchain: nightly-2020-04-06
+        toolchain: nightly-2020-06-04
         components: rust-src, llvm-tools-preview
 
     - name: Cache QEMU