diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 520856a..eb734ad 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -19,10 +19,10 @@ jobs:
       matrix:
         include:
           - artifact: x86_64-linux
-            os: ubuntu-latest
+            os: ubuntu-24.04
 
           - artifact: arm64-linux
-            os: ubuntu-latest
+            os: ubuntu-24.04
             rust_target: aarch64-unknown-linux-gnu
             env:
               # Don't build a sysroot for this cross-compiled target since it
@@ -41,7 +41,7 @@ jobs:
                 -DRUST_TARGET=aarch64-unknown-linux-gnu
 
           - artifact: arm64-macos
-            os: macos-latest
+            os: macos-14
             rust_target: aarch64-apple-darwin
             env:
               WASI_SDK_CI_TOOLCHAIN_LLVM_CMAKE_ARGS: >-
@@ -49,7 +49,7 @@ jobs:
                 -DCMAKE_OSX_ARCHITECTURES=arm64
 
           - artifact: x86_64-macos
-            os: macos-latest
+            os: macos-14
             rust_target: x86_64-apple-darwin
             env:
               WASI_SDK_CI_SKIP_SYSROOT: 1
@@ -58,7 +58,7 @@ jobs:
                 -DCMAKE_OSX_ARCHITECTURES=x86_64
 
           - artifact: x86_64-windows
-            os: windows-latest
+            os: windows-2022
 
     env: ${{ matrix.env || fromJSON('{}') }}
     steps:
@@ -165,7 +165,7 @@ jobs:
 
   build-only-sysroot:
     name: Build only sysroot
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
         with:
@@ -193,7 +193,7 @@ jobs:
   finalize:
     name: Finalize wasi-sdk artifacts
     needs: build
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
         with:
@@ -253,7 +253,7 @@ jobs:
   test-standalone:
     name: Test standalone toolchain
     needs: build
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
         with: