diff --git a/requirements.txt b/requirements.txt
index 52a34b9d1248c2f6bad166f46eec74704c05daef..f1b7c47859a7083c9a62df115d0d7c2656404ddd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,9 +1,9 @@
-numpy~=1.23.3
-scipy~=1.9.2
-setuptools~=65.5.1
-pandas~=1.5.3
-julian~=0.14
-astropy~=5.1
-tqdm~=4.59.0
-galsim~=2.4.5
-matplotlib~=3.3.1
+numpy==1.23.3
+scipy==1.9.2
+setuptools==65.5.1
+pandas==1.5.3
+julian==0.14
+astropy==5.1
+tqdm==4.59.0
+galsim==2.4.5
+matplotlib==3.3.1