diff --git a/.github/workflows/bors.yml b/.github/workflows/bors.yml
index 5073de99..241940a8 100644
--- a/.github/workflows/bors.yml
+++ b/.github/workflows/bors.yml
@@ -72,6 +72,9 @@ jobs:
         with:
           github_token: "${{ secrets.GITHUB_TOKEN }}"
       - uses: actions/checkout@v2
+      - name: Self-update rustup
+        run: rustup self update
+        shell: bash
       - name: Setup Rust toolchain
         run: TARGET=${{ matrix.target }} sh ./ci/install-rust.sh
         shell: bash
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 6b5f5daf..06f02c26 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -64,6 +64,9 @@ jobs:
           - target: i686-pc-windows-msvc
     steps:
       - uses: actions/checkout@v2
+      - name: Self-update rustup
+        run: rustup self update
+        shell: bash
       - name: Setup Rust toolchain
         run: TARGET=${{ matrix.target }} sh ./ci/install-rust.sh
         shell: bash
diff --git a/ci/install-rust.sh b/ci/install-rust.sh
index 377f0d0c..dcd24b88 100644
--- a/ci/install-rust.sh
+++ b/ci/install-rust.sh
@@ -12,7 +12,6 @@ else
 fi
 if [ "$OS" = "windows" ]; then
   : "${TARGET?The TARGET environment variable must be set.}"
-  rustup self update
   rustup set profile minimal
   rustup update --force $toolchain-"$TARGET"
   rustup default $toolchain-"$TARGET"