diff --git a/invideoquiz/__init__.py b/invideoquiz/__init__.py
index f8838dd..48c675a 100644
--- a/invideoquiz/__init__.py
+++ b/invideoquiz/__init__.py
@@ -3,4 +3,4 @@
 """
 from .invideoquiz import InVideoQuizXBlock
 
-__version__ = '1.3.1'
+__version__ = '1.4.0'
diff --git a/invideoquiz/invideoquiz.py b/invideoquiz/invideoquiz.py
index 12396cb..f902bbe 100644
--- a/invideoquiz/invideoquiz.py
+++ b/invideoquiz/invideoquiz.py
@@ -12,7 +12,12 @@
 from xblock.fields import String
 from xblock.fragment import Fragment
 from xblock.validation import ValidationMessage
-from xblock.utils.studio_editable import StudioEditableXBlockMixin
+try:
+    from xblock.utils.studio_editable import StudioEditableXBlockMixin
+except ModuleNotFoundError:
+    # For backward compatibility with releases older than Quince.
+    from xblockutils.studio_editable import StudioEditableXBlockMixin
+
 
 from .utils import _