diff --git a/.github/workflows/butterflynet.yml b/.github/workflows/butterflynet.yml
index 7a6e93f0bd45..f55b6b571471 100644
--- a/.github/workflows/butterflynet.yml
+++ b/.github/workflows/butterflynet.yml
@@ -19,6 +19,9 @@ jobs:
     name: Butterflynet checks
     runs-on: ubuntu-24.04-arm
     steps:
+      - uses: rui314/setup-mold@v1
+        with:
+          make-default: false
       - name: Checkout Sources
         uses: actions/checkout@v6
       - name: Setup sccache
@@ -29,7 +32,7 @@ jobs:
       - name: Build and install Forest binaries
         env:
           # To minimize compile times: https://nnethercote.github.io/perf-book/build-configuration.html#minimizing-compile-times
-          RUSTFLAGS: "-C linker=clang -C link-arg=-fuse-ld=lld"
+          RUSTFLAGS: "-C linker=clang -C link-arg=-fuse-ld=mold"
         run: mise run install --slim quick
       - name: Run butterflynet checks
         run: ./scripts/tests/butterflynet_check.sh
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index e2cef801af26..f4b75b88145e 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -29,7 +29,7 @@ env:
   CC: clang
   CXX: clang++
   # To minimize compile times: https://nnethercote.github.io/perf-book/build-configuration.html#minimizing-compile-times
-  RUSTFLAGS: "-C linker=clang -C link-arg=-fuse-ld=lld"
+  RUSTFLAGS: "-C linker=clang -C link-arg=-fuse-ld=mold"
   FOREST_F3_SIDECAR_FFI_BUILD_OPT_OUT: 1
   FIL_PROOFS_PARAMETER_CACHE: /var/tmp/filecoin-proof-parameters
   RUST_LOG: error
@@ -77,6 +77,9 @@ jobs:
               echo "SCCACHE_REGION=${{ vars.SCCACHE_REGION}}"
             } >> "$GITHUB_ENV"
           fi
+      - uses: rui314/setup-mold@v1
+        with:
+          make-default: false
       - name: Setup sccache
         uses: mozilla-actions/sccache-action@v0.0.10
         timeout-minutes: ${{ fromJSON(env.CACHE_TIMEOUT_MINUTES) }}
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 573afc21279a..5d1c8b8186f8 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -55,6 +55,9 @@ jobs:
               echo "SCCACHE_REGION=${{ vars.SCCACHE_REGION}}"
             } >> "$GITHUB_ENV"
           fi
+      - uses: rui314/setup-mold@v1
+        with:
+          make-default: false
       - name: Checkout Sources
         uses: actions/checkout@v6
       - name: Setup sccache
@@ -65,7 +68,7 @@ jobs:
       - name: Cargo Install
         env:
           # To minimize compile times: https://nnethercote.github.io/perf-book/build-configuration.html#minimizing-compile-times
-          RUSTFLAGS: "-C linker=clang -C link-arg=-fuse-ld=lld"
+          RUSTFLAGS: "-C linker=clang -C link-arg=-fuse-ld=mold"
         run: mise run install ${{ (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v')) && 'release' || 'quick' }}
       - uses: actions/upload-artifact@v7
         with:
@@ -93,6 +96,9 @@ jobs:
             } >> "$GITHUB_ENV"
           fi
           echo "SCCACHE_S3_KEY_PREFIX=aarch64" >> "$GITHUB_ENV"
+      - uses: rui314/setup-mold@v1
+        with:
+          make-default: false
       - name: Checkout Sources
         uses: actions/checkout@v6
         if: github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v')
@@ -105,6 +111,9 @@ jobs:
         if: github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v')
       - name: Cargo Install
         if: github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v')
+        env:
+          # To minimize compile times: https://nnethercote.github.io/perf-book/build-configuration.html#minimizing-compile-times
+          RUSTFLAGS: "-C linker=clang -C link-arg=-fuse-ld=mold"
         run: mise run install release
       - uses: actions/upload-artifact@v7
         if: github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v')
diff --git a/.github/workflows/forest.yml b/.github/workflows/forest.yml
index c6d2cc0a31c7..34ba5a9b494d 100644
--- a/.github/workflows/forest.yml
+++ b/.github/workflows/forest.yml
@@ -83,6 +83,9 @@ jobs:
               echo "SCCACHE_REGION=${{ vars.SCCACHE_REGION}}"
             } >> "$GITHUB_ENV"
           fi
+      - uses: rui314/setup-mold@v1
+        with:
+          make-default: false
       - name: Checkout Sources
         uses: actions/checkout@v6
       - name: Setup sccache
@@ -100,7 +103,7 @@ jobs:
       - name: Install Forest
         env:
           # To minimize compile times: https://nnethercote.github.io/perf-book/build-configuration.html#minimizing-compile-times
-          RUSTFLAGS: "-C linker=clang -C link-arg=-fuse-ld=lld"
+          RUSTFLAGS: "-C linker=clang -C link-arg=-fuse-ld=mold"
         run: mise run install --slim quick
       - uses: actions/upload-artifact@v7
         with: