diff --git a/requirements.txt b/requirements.txt
index 8bc9e11..bfa5c83 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-numpy >= 1.16
+numpy == 1.23.5
 scipy >= 1.5.4
 astropy == 5.0.4
 photutils == 1.1.0
@@ -18,4 +18,4 @@ sep
 astroalign > 2.3
 networkx
 astroquery >= 0.4.2
-tendrils >= 0.1.5
\ No newline at end of file
+tendrils >= 0.1.5