diff --git a/.github/workflows/build-wheels-aarch64-cuda.yaml b/.github/workflows/build-wheels-aarch64-cuda.yaml
index 9c226c431..a221553a4 100644
--- a/.github/workflows/build-wheels-aarch64-cuda.yaml
+++ b/.github/workflows/build-wheels-aarch64-cuda.yaml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-20.04]
         python-version: ["cp37", "cp38", "cp39", "cp310", "cp311", "cp312", "cp313"]
         manylinux: [manylinux2014] #, manylinux_2_28]
 
@@ -60,7 +60,6 @@ jobs:
           ls -lh ./wheelhouse/
 
       - name: Install patchelf
-        if: matrix.os == 'ubuntu-latest'
         shell: bash
         run: |
           sudo apt-get update -q
@@ -69,7 +68,6 @@ jobs:
 
       - name: Patch wheels
         shell: bash
-        if: matrix.os == 'ubuntu-latest'
         run: |
           mkdir ./wheels
           sudo ./scripts/wheel/patch_wheel.py --in-dir ./wheelhouse --out-dir ./wheels
diff --git a/.github/workflows/build-wheels-aarch64.yaml b/.github/workflows/build-wheels-aarch64.yaml
index 6b56293bd..d65e867a8 100644
--- a/.github/workflows/build-wheels-aarch64.yaml
+++ b/.github/workflows/build-wheels-aarch64.yaml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-20.04]
         python-version: ["cp37", "cp38", "cp39", "cp310", "cp311", "cp312", "cp313"]
         manylinux: [manylinux2014] #, manylinux_2_28]
 
@@ -60,7 +60,6 @@ jobs:
           ls -lh ./wheelhouse/
 
       - name: Install patchelf
-        if: matrix.os == 'ubuntu-latest'
         shell: bash
         run: |
           sudo apt-get update -q
@@ -69,7 +68,6 @@ jobs:
 
       - name: Patch wheels
         shell: bash
-        if: matrix.os == 'ubuntu-latest'
         run: |
           mkdir ./wheels
           sudo ./scripts/wheel/patch_wheel.py --in-dir ./wheelhouse --out-dir ./wheels
diff --git a/.github/workflows/build-wheels-linux.yaml b/.github/workflows/build-wheels-linux.yaml
index 2abd236f9..db2d77376 100644
--- a/.github/workflows/build-wheels-linux.yaml
+++ b/.github/workflows/build-wheels-linux.yaml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-20.04]
         python-version: ["cp37", "cp38", "cp39", "cp310", "cp311", "cp312", "cp313"]
         manylinux: [manylinux2014] #, manylinux_2_28]
 
diff --git a/flutter/sherpa_onnx_ios/README.md b/flutter/sherpa_onnx_ios/README.md
index 1334c2564..974250c30 100644
--- a/flutter/sherpa_onnx_ios/README.md
+++ b/flutter/sherpa_onnx_ios/README.md
@@ -1,4 +1,4 @@
-# sherpa_onnx_linux
+# sherpa_onnx_ios
 
 This is a sub project of [sherpa-onnx](https://github.com/k2-fsa/sherpa-onnx).
 
diff --git a/flutter/sherpa_onnx_macos/README.md b/flutter/sherpa_onnx_macos/README.md
index 1334c2564..171c76752 100644
--- a/flutter/sherpa_onnx_macos/README.md
+++ b/flutter/sherpa_onnx_macos/README.md
@@ -1,4 +1,4 @@
-# sherpa_onnx_linux
+# sherpa_onnx_macos
 
 This is a sub project of [sherpa-onnx](https://github.com/k2-fsa/sherpa-onnx).
 
diff --git a/flutter/sherpa_onnx_windows/README.md b/flutter/sherpa_onnx_windows/README.md
index 1334c2564..71c910982 100644
--- a/flutter/sherpa_onnx_windows/README.md
+++ b/flutter/sherpa_onnx_windows/README.md
@@ -1,4 +1,4 @@
-# sherpa_onnx_linux
+# sherpa_onnx_windows
 
 This is a sub project of [sherpa-onnx](https://github.com/k2-fsa/sherpa-onnx).