diff --git a/README.md b/README.md
index 19abf58..7e3b6d9 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # dactyl-cave
 The Dactyl Cave is a a parameterized, split-hand, concave, columnar, ergonomic keyboard.
 
-<img src="http://raw.githubusercontent.com/adereth/dactyl-cave/master/resources/prototype.jpg"/>
+<img src="https://raw.githubusercontent.com/adereth/dactyl-cave/master/resources/prototype.jpg"/>
 
 You can see the model [here](things/one-piece-left.stl).