diff --git a/environment.yml b/environment.yml
index e85d630a..6885aee8 100644
--- a/environment.yml
+++ b/environment.yml
@@ -23,4 +23,4 @@ dependencies:
     - mechanize
     - browser-cookie3
     - pyqt5
-    - pyqtgraph=0.12.4
+    - pyqtgraph==0.12.4