diff --git a/.github/workflows/rust-ci.yml b/.github/workflows/rust-ci.yml
index c52013149..f4664c16a 100644
--- a/.github/workflows/rust-ci.yml
+++ b/.github/workflows/rust-ci.yml
@@ -59,7 +59,7 @@ jobs:
         working-directory: codex-rs
     steps:
       - uses: actions/checkout@v6
-      - uses: dtolnay/rust-toolchain@1.93
+      - uses: dtolnay/rust-toolchain@1.93.0
         with:
           components: rustfmt
       - name: cargo fmt
@@ -75,7 +75,7 @@ jobs:
         working-directory: codex-rs
     steps:
       - uses: actions/checkout@v6
-      - uses: dtolnay/rust-toolchain@1.93
+      - uses: dtolnay/rust-toolchain@1.93.0
       - uses: taiki-e/install-action@44c6d64aa62cd779e873306675c7a58e86d6d532 # v2
         with:
           tool: cargo-shear
@@ -196,7 +196,7 @@ jobs:
             fi
             sudo DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends "${packages[@]}"
           fi
-      - uses: dtolnay/rust-toolchain@1.93
+      - uses: dtolnay/rust-toolchain@1.93.0
         with:
           targets: ${{ matrix.target }}
           components: clippy
@@ -513,7 +513,7 @@ jobs:
       - name: Install DotSlash
         uses: facebook/install-dotslash@v2
 
-      - uses: dtolnay/rust-toolchain@1.93
+      - uses: dtolnay/rust-toolchain@1.93.0
         with:
           targets: ${{ matrix.target }}
 
diff --git a/.github/workflows/rust-release-windows.yml b/.github/workflows/rust-release-windows.yml
index fd411715b..85556bc8c 100644
--- a/.github/workflows/rust-release-windows.yml
+++ b/.github/workflows/rust-release-windows.yml
@@ -82,7 +82,7 @@ jobs:
           Write-Host "Total RAM: $ramGiB GiB"
           Write-Host "Disk usage:"
           Get-PSDrive -PSProvider FileSystem | Format-Table -AutoSize Name, @{Name='Size(GB)';Expression={[math]::Round(($_.Used + $_.Free) / 1GB, 1)}}, @{Name='Free(GB)';Expression={[math]::Round($_.Free / 1GB, 1)}}
-      - uses: dtolnay/rust-toolchain@1.93
+      - uses: dtolnay/rust-toolchain@1.93.0
         with:
           targets: ${{ matrix.target }}
 
diff --git a/.github/workflows/rust-release.yml b/.github/workflows/rust-release.yml
index 3ed224395..30090089c 100644
--- a/.github/workflows/rust-release.yml
+++ b/.github/workflows/rust-release.yml
@@ -123,7 +123,7 @@ jobs:
             sudo apt-get update -y
             sudo DEBIAN_FRONTEND=noninteractive apt-get install -y libubsan1
           fi
-      - uses: dtolnay/rust-toolchain@1.93
+      - uses: dtolnay/rust-toolchain@1.93.0
         with:
           targets: ${{ matrix.target }}
 
diff --git a/.github/workflows/sdk.yml b/.github/workflows/sdk.yml
index ec67cd187..33e0c080e 100644
--- a/.github/workflows/sdk.yml
+++ b/.github/workflows/sdk.yml
@@ -31,7 +31,7 @@ jobs:
           node-version: 22
           cache: pnpm
 
-      - uses: dtolnay/rust-toolchain@1.93
+      - uses: dtolnay/rust-toolchain@1.93.0
 
       - name: build codex
         run: cargo build --bin codex
diff --git a/.github/workflows/shell-tool-mcp.yml b/.github/workflows/shell-tool-mcp.yml
index 0b17acb88..4f17b347a 100644
--- a/.github/workflows/shell-tool-mcp.yml
+++ b/.github/workflows/shell-tool-mcp.yml
@@ -105,7 +105,7 @@ jobs:
             sudo DEBIAN_FRONTEND=noninteractive apt-get install -y libubsan1
           fi
 
-      - uses: dtolnay/rust-toolchain@1.93
+      - uses: dtolnay/rust-toolchain@1.93.0
         with:
           targets: ${{ matrix.target }}