diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 28db0f8b7c..8294e87d83 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -57,10 +57,6 @@ or by the following steps
 ```shell
 # install rvm
 curl -L https://get.rvm.io | bash -s -- --autolibs=read-fail
-
-# set up environment
-echo 'source $HOME/.bash_profile' >> ~/.bashrc
-source ~/.profile
 rvm autolibs disable
 
 # install ruby