diff --git a/.ruby-gemset b/.ruby-gemset
new file mode 100644
index 0000000000..93a8706d3e
--- /dev/null
+++ b/.ruby-gemset
@@ -0,0 +1 @@
+mitx
diff --git a/.rvmrc b/.rvmrc
deleted file mode 100644
index 348cf3e59c..0000000000
--- a/.rvmrc
+++ /dev/null
@@ -1 +0,0 @@
-rvm use 1.9.3-p374@mitx