diff --git a/requirements.txt b/requirements.txt
index a80e7f85a2fd7227cd4cf9a220b78de224b05e96..cb45a51cea45ad8f67d7fd552d8b1470231409c8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,4 +5,4 @@ pandas==1.2.3
 julian==0.14
 astropy==5.1
 tqdm==4.59.0
-galsim==2.4.5
+galsim==2.4.9