diff --git a/content/dev/build/android/_index.en.md b/content/dev/build/android/_index.en.md
index a6c4d49..fdd70a6 100644
--- a/content/dev/build/android/_index.en.md
+++ b/content/dev/build/android/_index.en.md
@@ -19,7 +19,7 @@ wget https://dl.google.com/android/repository/android-ndk-r22b-linux-x86_64.zip
 unzip android-ndk-r22b-linux-x86_64.zip
 
 # install ffigen and llvm 
-dart pub global activate ffigen
+dart pub global activate ffigen 5.0.1
 # on Ubuntu 18, it is: sudo apt install libclang-9-dev
 sudo apt-get install libclang-dev
 
diff --git a/content/dev/build/android/_index.zh-cn.md b/content/dev/build/android/_index.zh-cn.md
index d68f787..b83e70a 100644
--- a/content/dev/build/android/_index.zh-cn.md
+++ b/content/dev/build/android/_index.zh-cn.md
@@ -19,7 +19,7 @@ wget https://dl.google.com/android/repository/android-ndk-r22b-linux-x86_64.zip
 unzip android-ndk-r22b-linux-x86_64.zip
 
 # install ffigen and llvm 
-dart pub global activate ffigen
+dart pub global activate ffigen 5.0.1
 # on Ubuntu 18, it is: sudo apt install libclang-9-dev
 sudo apt-get install libclang-dev
 
diff --git a/content/dev/build/android/_index.zh-tw.md b/content/dev/build/android/_index.zh-tw.md
index 5c63292..d27c231 100644
--- a/content/dev/build/android/_index.zh-tw.md
+++ b/content/dev/build/android/_index.zh-tw.md
@@ -19,7 +19,7 @@ wget https://dl.google.com/android/repository/android-ndk-r22b-linux-x86_64.zip
 unzip android-ndk-r22b-linux-x86_64.zip
 
 # install ffigen and llvm 
-dart pub global activate ffigen
+dart pub global activate ffigen 5.0.1
 # on Ubuntu 18, it is: sudo apt install libclang-9-dev
 sudo apt-get install libclang-dev