diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index be57730bb4..188b789fc8 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -57,7 +57,7 @@ jobs:
           - macos-latest
           # - windows-latest
         rust:
-          - 1.66.1
+          - 1.72.1
           - stable
           # - nightly
     steps:
@@ -89,7 +89,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: 1.66.1
+          toolchain: 1.72.1
           override: true
 
       - name: Clone repo
@@ -118,7 +118,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: 1.66.1
+          toolchain: 1.72.1
           override: true
 
       - name: Clone repo
@@ -148,7 +148,7 @@ jobs:
           - macos-latest
           - windows-latest
         rust:
-          - 1.66.1
+          - 1.72.1
           - stable
           # - nightly
     steps:
@@ -221,7 +221,7 @@ jobs:
         with:
           profile: default
           override: true
-          toolchain: 1.66.1
+          toolchain: 1.72.1
 
       - name: Install `mdbook`
         uses: peaceiris/actions-mdbook@v1