diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 10b3d737..00c08a28 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -9,7 +9,7 @@ on:
 
 jobs:
   macos:
-    runs-on: macos-14
+    runs-on: macos-13
     strategy:
       matrix:
         python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
@@ -25,7 +25,7 @@ jobs:
       - name: Install build stuff
         run: xcode-select --install
       - name: Tests
-        run: CC="clang -arch arm64" cargo test --no-default-features --release
+        run: cargo test --no-default-features --release
       - name: Build wheels - x86_64 - cramjam-cli
         uses: PyO3/maturin-action@v1
         with:
diff --git a/libcramjam/Cargo.toml b/libcramjam/Cargo.toml
index fb449e10..19fd9f90 100644
--- a/libcramjam/Cargo.toml
+++ b/libcramjam/Cargo.toml
@@ -18,7 +18,7 @@ brotli = { version = "^3", default-features = false, features = ["std", "ffi-api
 bzip2 = "^0.4"
 lz4 = "^1"
 flate2 = "^1"
-blosc2-rs = "0.2.0+2.13.2"
+blosc2-rs = "0.2.1+2.13.2"
 libdeflater = "^1"
 zstd = "0.13.0"
 libc = { version = "0.2", optional = true }