diff --git a/requirements.txt b/requirements.txt
index 5baf99dd070a1ea9449e7c2e278fcce45c84201d..ed12acc15063e226b69f28b0c30d0b3e269c13cc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,3 @@
-astropy==4.1
-numpy==1.19.5
+astropy==4.2.1
+numpy==1.20.2
+pyerfa==1.7.2