diff --git a/requirements.txt b/requirements.txt
index d29a3e4..d66a12f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ numpy
 pyaudio
 crcmod
 PyQt5
-pyqtgraph
+pyqtgraph==0.12.4
 ruamel.yaml
 requests
-horusdemodlib>=0.3.6
\ No newline at end of file
+horusdemodlib>=0.3.6