diff --git a/Dockerfile b/Dockerfile
index a9a05353c..581c14282 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,9 +14,9 @@ RUN apt install -y libssl1.0-dev libpq-dev
 ENV HOME /root
 ENV PATH $HOME/.rbenv/shims:$HOME/.rbenv/bin:$HOME/.rbenv/plugins/ruby-build/bin:$PATH
 # clone rbenv
-RUN git clone git://github.com/sstephenson/rbenv.git ~/.rbenv
+RUN git clone https://github.com/sstephenson/rbenv.git ~/.rbenv
 # clone ruby-build
-RUN git clone git://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
+RUN git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
 # set working directory to project src
 WORKDIR /src
 # add Gemfile, Gemfile.lock, .ruby-version to docker