diff --git a/dockerfiles/nix-channels/Dockerfile b/dockerfiles/nix-channels/Dockerfile
index 7f3d7d4..7069cdd 100644
--- a/dockerfiles/nix-channels/Dockerfile
+++ b/dockerfiles/nix-channels/Dockerfile
@@ -3,7 +3,7 @@ MAINTAINER Wang Ruikang <dramforever@live.com>
 
 RUN apt-get update && \
     apt-get install -y python3-dev python3-pip curl && \
-    pip3 install pyquery requests minio && \
+    pip3 install pyquery requests minio==6.0.2 && \
     # Install Nix. To simplify management we only copy binaries and create
     # symlinks, and do no further configuration
     curl https://mirrors.tuna.tsinghua.edu.cn/nix/nix-2.3.2/nix-2.3.2-x86_64-linux.tar.xz -o /tmp/nix.tar.xz && \