diff --git a/docs/courses/csintro/conditionals/activity.md b/docs/courses/csintro/conditionals/activity.md
index d523ab16..1fbc06fa 100644
--- a/docs/courses/csintro/conditionals/activity.md
+++ b/docs/courses/csintro/conditionals/activity.md
@@ -3,7 +3,7 @@
 For this activity, each student will need a micro:bit. 
 Everyone will create the same program, the classic rock paper scissor game.
 
-![Rock, paper, scissors](/static/courses/csintro/conditionals/rock-paper-scissors.png)
+![Rock, paper, scissors](/static/courses/csintro/conditionals/rock-paper-scissors-items.png)
 
 ## Introduce activity
 
diff --git a/docs/static/courses/csintro/conditionals/Rock-Paper-Scissors.png b/docs/static/courses/csintro/conditionals/rock-paper-scissors-items.png
similarity index 100%
rename from docs/static/courses/csintro/conditionals/Rock-Paper-Scissors.png
rename to docs/static/courses/csintro/conditionals/rock-paper-scissors-items.png
diff --git a/docs/static/courses/csintro/variables/cover.JPG b/docs/static/courses/csintro/variables/cover.jpg
similarity index 100%
rename from docs/static/courses/csintro/variables/cover.JPG
rename to docs/static/courses/csintro/variables/cover.jpg
diff --git a/package.json b/package.json
index 839c7a2b..5cb5b0fa 100644
--- a/package.json
+++ b/package.json
@@ -38,6 +38,6 @@
     "semantic-ui-less": "^2.2.4"
   },
   "dependencies": {
-    "pxt-core": "0.12.121"
+    "pxt-core": "0.12.124"
   }
 }