diff --git a/binder/requirements.txt b/binder/requirements.txt
index c8ddab3..c0be89a 100644
--- a/binder/requirements.txt
+++ b/binder/requirements.txt
@@ -5,6 +5,7 @@ h5glance
 matplotlib
 scipy
 silx
+pyqt5
 
 # jupyter environment
 bash_kernel