diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index fee5c45ea..c179a3391 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -20,7 +20,8 @@ jobs:
           rust: nightly
         - target: aarch64-unknown-linux-gnu
           os: ubuntu-latest
-          rust: nightly
+          # FIXME: pinned due to https://github.com/llvm/llvm-project/issues/127804
+          rust: nightly-2025-02-07
         - target: aarch64-pc-windows-msvc
           os: windows-latest
           rust: nightly
@@ -98,7 +99,8 @@ jobs:
           test_verbatim: 1
         - target: i686-pc-windows-gnu
           os: windows-latest
-          rust: nightly-i686-gnu
+          # FIXME: pinned due to https://github.com/rust-lang/rust/issues/136795
+          rust: nightly-2025-02-07-i686-gnu
         - target: x86_64-pc-windows-gnu
           os: windows-latest
           rust: nightly-x86_64-gnu
@@ -117,7 +119,7 @@ jobs:
       with:
         key: ${{ matrix.target }}
     - name: Cache Docker layers
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       if: matrix.os == 'ubuntu-latest'
       with:
         path: /tmp/.buildx-cache