diff --git a/.github/workflows/build-dev-binaries.yml b/.github/workflows/build-dev-binaries.yml
index 649d5f249..f6640521a 100644
--- a/.github/workflows/build-dev-binaries.yml
+++ b/.github/workflows/build-dev-binaries.yml
@@ -24,7 +24,8 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
+      - name: "Install mold"
+        run: ./scripts/install-mold.sh
 
       - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
         with:
@@ -51,7 +52,8 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
+      - name: "Install mold"
+        run: ./scripts/install-mold.sh
 
       - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
         with:
@@ -78,7 +80,8 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
+      - name: "Install mold"
+        run: ./scripts/install-mold.sh
 
       - name: "Setup musl"
         run: |
@@ -110,8 +113,6 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
-
       - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
         with:
           save-if: ${{ inputs.save-rust-cache == 'true' }}
@@ -136,8 +137,6 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
-
       - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
         with:
           save-if: ${{ inputs.save-rust-cache == 'true' }}
@@ -241,7 +240,7 @@ jobs:
         env:
           MSRV: ${{ steps.msrv.outputs.value }}
       - name: "Install mold"
-        uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
+        run: ./scripts/install-mold.sh
       - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
         with:
           save-if: ${{ inputs.save-rust-cache == 'true' }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 91bf79cba..8d1f05952 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -33,7 +33,8 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
+      - name: "Install mold"
+        run: ./scripts/install-mold.sh
 
       - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
         with:
@@ -106,8 +107,6 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
-
       - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
         with:
           save-if: ${{ inputs.save-rust-cache == 'true' }}
diff --git a/scripts/install-mold.sh b/scripts/install-mold.sh
new file mode 100755
index 000000000..c302a11b8
--- /dev/null
+++ b/scripts/install-mold.sh
@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+# Install mold linker and make it the default linker.
+#
+# Retries on transient HTTP errors (e.g., 500) that the `rui314/setup-mold`
+# GitHub Action does not handle.
+
+set -euo pipefail
+
+MOLD_VERSION="${MOLD_VERSION:-2.40.4}"
+
+arch="$(uname -m)"
+url="https://github.com/rui314/mold/releases/download/v${MOLD_VERSION}/mold-${MOLD_VERSION}-${arch}-linux.tar.gz"
+
+if [ "$(whoami)" = root ]; then
+    SUDO=""
+else
+    SUDO="sudo"
+fi
+
+echo "Installing mold ${MOLD_VERSION} (${arch})..."
+
+wget -O- \
+    --timeout=10 \
+    --tries=5 \
+    --waitretry=3 \
+    --retry-connrefused \
+    --retry-on-http-error=429,500,502,503,504 \
+    --progress=dot:mega \
+    "$url" \
+    | $SUDO tar -C /usr/local --strip-components=1 --no-overwrite-dir -xzf -
+
+# Make mold the default linker
+current_ld="$(realpath /usr/bin/ld)"
+if [ "$current_ld" != /usr/local/bin/mold ]; then
+    $SUDO ln -sf /usr/local/bin/mold "$current_ld"
+fi
+
+echo "mold ${MOLD_VERSION} installed successfully"
+mold --version