diff --git a/Dockerfile b/Dockerfile
index 8d3ef864a..af3a19a31 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ RUN apk add --no-cache build-base curl
 
 WORKDIR /src/nginx-unit
 
-RUN curl -L https://github.com/nginx/unit/archive/master.tar.gz | tar xz --strip-components 1
+RUN curl -L https://github.com/nginx/unit/archive/0.4.tar.gz | tar xz --strip-components 1
 RUN ./configure --prefix=/usr/local --modules=lib --state=/var/local/unit --pid=/var/unit.pid --log=/var/log/unit.log \
  && ./configure python \
  && make install