diff --git a/requirements/edx/base.txt b/requirements/edx/base.txt
index f8bf2c195a..d5fd02890d 100644
--- a/requirements/edx/base.txt
+++ b/requirements/edx/base.txt
@@ -72,7 +72,7 @@ oauthlib==1.0.3
 paramiko==1.9.0
 path.py==8.2.1
 piexif==1.0.2
-Pillow==3.1.1
+Pillow==3.4
 polib==1.0.3
 pycrypto>=2.6
 pygments==2.0.1
diff --git a/requirements/edx/edx-private.txt b/requirements/edx/edx-private.txt
index e0e0b7da01..ece851b234 100644
--- a/requirements/edx/edx-private.txt
+++ b/requirements/edx/edx-private.txt
@@ -8,7 +8,7 @@
 
 # For Harvard courses:
 -e git+https://github.com/gsehub/xblock-mentoring.git@4d1cce78dc232d5da6ffd73817b5c490e87a6eee#egg=xblock-mentoring
-git+https://github.com/open-craft/problem-builder.git@v2.0.4#egg=xblock-problem-builder==2.0.4
+git+https://github.com/open-craft/problem-builder.git@v2.6.1#egg=xblock-problem-builder==2.6.1
 
 # Oppia XBlock
 -e git+https://github.com/oppia/xblock.git@9f6b95b7eb7dbabb96b77198a3202604f96adf65#egg=oppia-xblock