diff --git a/requirements.txt b/requirements.txt
index 85d4e31..d5417c4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,12 +1,12 @@
-numpy>=1.19.2
+numpy==1.19.2
 pandas==1.3.5
 panel==0.12.4
 plotly==5.8.0
-pyteomics>=4.3.3
+pyteomics==4.3.3
 pdfrw==0.4
 psutil==5.8.0
 reportlab==3.5.59
 kaleido==0.2.1
 bokeh==2.4.2
-structuremap>=0.0.8
-h5py>=3.6.0
+structuremap==0.0.8
+h5py==3.6.0