diff --git a/requirements.txt b/requirements.txt
index 7efbdad..43e391b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ toml==0.10.2
 python-irodsclient==0.8.5
 
 # Astronomical processing
-astropy==4.2
+astropy==5.3.3
 
 # Testing
 pytest==6.1.2