diff --git a/.github/workflows/napi.yml b/.github/workflows/napi.yml
index 55d146ac..ce62f844 100644
--- a/.github/workflows/napi.yml
+++ b/.github/workflows/napi.yml
@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
+        os: [ubuntu-20.04, windows-latest, macos-latest]
         node: [14, 16]
         include:
           - os: macos-latest
@@ -33,7 +33,7 @@ jobs:
             build: yarn build-release
             use_sysroot: false
 
-          - os: ubuntu-latest
+          - os: ubuntu-20.04
             target: x86_64-unknown-linux-gnu
             arch: x64
             build: yarn build --release
@@ -52,7 +52,7 @@ jobs:
           cache-dependency-path: js/napi/yarn.lock
 
       - uses: dtolnay/rust-toolchain@stable
-      
+
       - name: Use Rust Cache
         uses: Swatinem/rust-cache@v1
 
@@ -62,15 +62,15 @@ jobs:
           # Avoid running man-db triggers, which sometimes takes several minutes
           # to complete.
           sudo apt-get remove --purge -y man-db
-          # Install clang-15, lld-15, and debootstrap.
-          echo "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-15 main" |
-            sudo dd of=/etc/apt/sources.list.d/llvm-toolchain-focal-15.list
+          # Install clang-14, lld-14, and debootstrap.
+          echo "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-14 main" |
+            sudo dd of=/etc/apt/sources.list.d/llvm-toolchain-focal-14.list
           curl https://apt.llvm.org/llvm-snapshot.gpg.key |
             gpg --dearmor                                 |
           sudo dd of=/etc/apt/trusted.gpg.d/llvm-snapshot.gpg
           sudo apt-get update
-          # this was unreliable sometimes, so try again if it fails
-          sudo apt-get install --no-install-recommends debootstrap clang-15 lld-15 || echo 'Failed. Trying again.' && sudo apt-get clean && sudo apt-get update && sudo apt-get install --no-install-recommends debootstrap clang-15 lld-15
+          sudo apt-get install --no-install-recommends debootstrap     \
+                                                       clang-14 lld-14
           # Create ubuntu-16.04 sysroot environment, which is used to avoid
           # depending on a very recent version of glibc.
           # `libc6-dev` is required for building any C source files.
@@ -93,8 +93,8 @@ jobs:
           CARGO_PROFILE_RELEASE_LTO=false
           RUSTFLAGS<<__1
             -C linker-plugin-lto=true
-            -C linker=clang-15
-            -C link-arg=-fuse-ld=lld-15
+            -C linker=clang-14
+            -C link-arg=-fuse-ld=lld-14
             -C link-arg=--sysroot=/sysroot
             -C link-arg=-Wl,--allow-shlib-undefined
             -C link-arg=-Wl,--thinlto-cache-dir=$(pwd)/target/release/lto-cache
@@ -103,15 +103,15 @@ jobs:
           __1
           RUSTDOCFLAGS<<__1
             -C linker-plugin-lto=true
-            -C linker=clang-15
-            -C link-arg=-fuse-ld=lld-15
+            -C linker=clang-14
+            -C link-arg=-fuse-ld=lld-14
             -C link-arg=--sysroot=/sysroot
             -C link-arg=-Wl,--allow-shlib-undefined
             -C link-arg=-Wl,--thinlto-cache-dir=$(pwd)/target/release/lto-cache
             -C link-arg=-Wl,--thinlto-cache-policy,cache_size_bytes=700m
             ${{ env.RUSTFLAGS }}
           __1
-          CC=clang-15
+          CC=clang-14
           CFLAGS=-flto=thin --sysroot=/sysroot
           __0