diff --git a/requirements.txt b/requirements.txt
index 8244ab7e..14853f77 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-astropy==4.2.1
+astropy==4.3.1
 ipython==7.25.0
 matplotlib==3.4.2
 numpy==1.21.1