diff --git a/requirements/edx/custom.txt b/requirements/edx/custom.txt
index 4e77dd6dd6e1..a99f5b4a9b04 100644
--- a/requirements/edx/custom.txt
+++ b/requirements/edx/custom.txt
@@ -10,7 +10,7 @@
 git+https://github.com/edx-solutions/xblock-group-project.git@1.0.0#egg=xblock-group-project==1.0.0
 -e git+https://github.com/edx-solutions/xblock-adventure.git@1.0.1#egg=xblock-adventure==1.0.1
 -e git+https://github.com/open-craft/xblock-poll.git@v1.10.1#egg=xblock-poll==1.10.1
--e git+https://github.com/mckinseyacademy/problem-builder.git@v4.1.15#egg=xblock-problem-builder==4.1.15
+-e git+https://github.com/mckinseyacademy/problem-builder.git@v4.1.17#egg=xblock-problem-builder==4.1.17
 #-e git+https://github.com/OfficeDev/xblock-officemix.git@86238f5968a08db005717dbddc1.9.6346808f1ed3716#egg=xblock-officemix
 -e git+https://github.com/open-craft/xblock-chat.git@v0.3.0#egg=chat-xblock==0.3.0
 -e git+https://github.com/open-craft/xblock-eoc-journal.git@v0.10.1#egg=xblock-eoc-journal==0.10.1