diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 87367d2..196908a 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -16,3 +16,11 @@ updates:
     open-pull-requests-limit: 10
     labels:
       - dependency
+
+    # Group all updates together in a single PR. We can remove some
+    # updates from a combined update PR via comments to dependabot:
+    # https://docs.github.com/en/code-security/dependabot/working-with-dependabot/managing-pull-requests-for-dependency-updates#managing-dependabot-pull-requests-for-grouped-updates-with-comment-commands
+    groups:
+      build:
+        patterns:
+          - "*"
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 7a77066..aa47c0e 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -18,7 +18,7 @@ concurrency:
 env:
   CARGO_TERM_COLOR: always
   # Pinned toolchain for linting
-  ACTIONS_LINTS_TOOLCHAIN: 1.75.0
+  ACTIONS_LINTS_TOOLCHAIN: 1.84.1
 
 jobs:
   tests-stable:
@@ -27,7 +27,7 @@ jobs:
     container: quay.io/coreos-assembler/fcos-buildroot:testing-devel
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@v1
         with:
@@ -44,7 +44,7 @@ jobs:
     container: quay.io/coreos-assembler/fcos-buildroot:testing-devel
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@v1
         with:
@@ -61,7 +61,7 @@ jobs:
     container: quay.io/coreos-assembler/fcos-buildroot:testing-devel
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
       - name: Detect crate MSRV
         run: |
           msrv=$(cargo metadata --format-version 1 --no-deps | \
@@ -84,7 +84,7 @@ jobs:
     container: quay.io/coreos-assembler/fcos-buildroot:testing-devel
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@v1
         with:
@@ -106,7 +106,7 @@ jobs:
         channel: [beta, nightly]
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@v1
         with:
@@ -117,19 +117,3 @@ jobs:
         run: cargo build --all-targets
       - name: cargo test
         run: cargo test --all-targets
-  tests-windows:
-    name: Tests, Windows
-    runs-on: windows-latest
-    steps:
-      - name: Check out repository
-        uses: actions/checkout@v5
-      - name: Install toolchain
-        uses: dtolnay/rust-toolchain@v1
-        with:
-          toolchain: stable
-      - name: Cache build artifacts
-        uses: Swatinem/rust-cache@v2
-      - name: cargo build
-        run: cargo build --all-targets
-      - name: cargo test
-        run: cargo test --all-targets