diff --git a/levels/4/.rvmrc b/levels/4/.rvmrc
new file mode 100644
index 0000000..858f04d
--- /dev/null
+++ b/levels/4/.rvmrc
@@ -0,0 +1 @@
+rvm use 1.9.3@level_4 --create
diff --git a/levels/5/.rvmrc b/levels/5/.rvmrc
new file mode 100644
index 0000000..41a7e08
--- /dev/null
+++ b/levels/5/.rvmrc
@@ -0,0 +1 @@
+rvm use 1.9.3@level_5 --create
diff --git a/levels/6/.rvmrc b/levels/6/.rvmrc
new file mode 100644
index 0000000..7e1856f
--- /dev/null
+++ b/levels/6/.rvmrc
@@ -0,0 +1 @@
+rvm use 1.9.3@level_6 --create