diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1d4a3ec..e88f8cc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
-      - uses: actions/setup-go@40f1582b2485089dde7abd97c1529aa768e1baff # v5.6.0
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
         with:
           go-version: ${{ env.GO_VERSION }}
       - uses: golangci/golangci-lint-action@0adbc47a5910e47adb692df88187ec8c73c76778 # v6.4.0
@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
-      - uses: actions/setup-go@40f1582b2485089dde7abd97c1529aa768e1baff # v5.6.0
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
         with:
           go-version: ${{ env.GO_VERSION }}
       - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
@@ -45,7 +45,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
-      - uses: actions/setup-go@40f1582b2485089dde7abd97c1529aa768e1baff # v5.6.0
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
         with:
           go-version: ${{ env.GO_VERSION }}
       - run: go build -o bin/sourcebridge ./cmd/sourcebridge
diff --git a/.github/workflows/fallback-compat.yml b/.github/workflows/fallback-compat.yml
index a69f2e1..acbaad1 100644
--- a/.github/workflows/fallback-compat.yml
+++ b/.github/workflows/fallback-compat.yml
@@ -38,7 +38,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
-      - uses: actions/setup-go@40f1582b2485089dde7abd97c1529aa768e1baff # v5.6.0
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
         with:
           go-version: ${{ env.GO_VERSION }}
       - name: Cache Go modules
diff --git a/.github/workflows/oss-release.yml b/.github/workflows/oss-release.yml
index 7716418..4d80eb2 100644
--- a/.github/workflows/oss-release.yml
+++ b/.github/workflows/oss-release.yml
@@ -56,7 +56,7 @@ jobs:
           # be derived consistently with the release tag.
           fetch-depth: 0
           fetch-tags: true
-      - uses: actions/setup-go@40f1582b2485089dde7abd97c1529aa768e1baff # v5.6.0
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
         with:
           go-version: ${{ env.GO_VERSION }}
       - name: Build binary
diff --git a/.github/workflows/test-notify.yml b/.github/workflows/test-notify.yml
index e4de389..b1bc3a8 100644
--- a/.github/workflows/test-notify.yml
+++ b/.github/workflows/test-notify.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
-      - uses: actions/setup-go@40f1582b2485089dde7abd97c1529aa768e1baff # v5.6.0
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
         with:
           go-version: ${{ env.GO_VERSION }}
       - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0