diff --git a/Makefile b/Makefile
index 1792885..8f546aa 100644
--- a/Makefile
+++ b/Makefile
@@ -37,7 +37,7 @@ copyreadme:
 
 # convert notebooks to md files
 convert_notebooks:
-	runipy docs/tutorials/2015-07-04-hello-world-functional-tests-part-2.ipynb /tmp/2015-07-04-hello-world-functional-tests-part-2.ipynb && ipython nbconvert /tmp/2015-07-04-hello-world-functional-tests-part-2.ipynb --to=rst docs/tutorials/2015-07-04-hello-world-functional-tests-part-2.md
+	runipy --kernel=julia-0.4 docs/tutorials/2015-07-04-hello-world-functional-tests-part-2.ipynb /tmp/2015-07-04-hello-world-functional-tests-part-2.ipynb && ipython nbconvert /tmp/2015-07-04-hello-world-functional-tests-part-2.ipynb --to=rst docs/tutorials/2015-07-04-hello-world-functional-tests-part-2.md
 
 # sync web server
 wwwdeploy: