diff --git a/requirements_dev.txt b/requirements_dev.txt
index 4cb4edd4f4dd0f41a32b434e4e8ca13d5d6199c8..0bc267e913ae035b96984a0688e169daacc5ddd3 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -15,4 +15,5 @@ numpy==1.16.2
 recordtype==1.3
 xarray==0.11.3
 matplotlib==3.0.2
+PyQt5==5.12