diff --git a/requirements.txt b/requirements.txt
index 249381f..25df7f9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ pandas>=0.24.2,<1.0
 scikit-learn>=0.22.1
 matplotlib>=3.1.1
 seaborn>=0.9.0
-astropy==4.0.1.post1
+astropy==5.3.3
 scikit-image==0.16.2
 imageio==2.6.1
 pytest==5.4.2