diff --git a/.drone.yml b/.drone.yml
index 7c6d602..088139e 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -33,9 +33,9 @@ steps:
     pull: if-not-exists
     image: alpine
     commands:
-      - wget -q -T 180 https://dl.google.com/android/repository/android-ndk-r22-linux-x86_64.zip
-      - unzip -q android-ndk-r22-linux-x86_64.zip
-      - rm -f android-ndk-r22-linux-x86_64.zip
+      - wget -q -T 180 https://dl.google.com/android/repository/android-ndk-r21d-linux-x86_64.zip
+      - unzip -q android-ndk-r21d-linux-x86_64.zip
+      - rm -f android-ndk-r21d-linux-x86_64.zip
   - name: docker
     pull: if-not-exists
     image: plugins/docker
diff --git a/Dockerfile b/Dockerfile
index e47a7ed..b99168a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,9 +10,9 @@ RUN apt-get update \
     build-essential mingw-w64 upx-ucl
 
 # 安装android ndk
-COPY android-ndk-r22 /usr/local/android-ndk-r22
+COPY android-ndk-r21d /usr/local/android-ndk-r21d
 
 # 环境变量
-ENV PATH=$PATH:/usr/local/android-ndk-r22/toolchains/llvm/prebuilt/linux-x86_64/bin
+ENV PATH=$PATH:/usr/local/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/bin
 ENV GO111MODULE=on
 ENV GOPROXY=https://goproxy.aite.xyz,direct
\ No newline at end of file