diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index df95795..755b281 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2.3.4
-      - uses: actions-rs/toolchain@v1
+      - uses: actions-rs/toolchain@v1.0.7
         with:
           toolchain: stable
           override: true
@@ -45,7 +45,7 @@ jobs:
     - uses: actions/checkout@v2.3.4
     # Because we use nightly features for building docs,
     # using --all-features will fail without nightly toolchain.
-    - uses: actions-rs/toolchain@v1
+    - uses: actions-rs/toolchain@v1.0.7
       with:
         toolchain: nightly
         override: true
@@ -59,7 +59,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2.3.4
-      - uses: actions-rs/toolchain@v1
+      - uses: actions-rs/toolchain@v1.0.7
         with:
           toolchain: stable
           override: true
@@ -78,7 +78,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2.3.4
-      - uses: actions-rs/toolchain@v1
+      - uses: actions-rs/toolchain@v1.0.7
         with:
           toolchain: stable
           override: true