diff --git a/requirements.txt b/requirements.txt
index 0da1af9..0faaa4d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,13 +1,13 @@
-numpy==1.19.2
-pandas==1.4.0
-panel==0.10.3
-param==1.10.0
-plotly==4.12.0
-pyteomics==4.3.3
-pdfrw==0.4
-psutil==5.8.0
-reportlab==3.5.59
-kaleido==0.2.1
-bokeh==2.2.2
-structuremap==0.0.8
-h5py==3.6.0
+numpy>=1.19.2,<2
+pandas>=1.4.0,<2
+panel>=0.10.3,<0.11
+param>=1.10.0,<2
+plotly>=4.12.0,<5
+pyteomics>=4.3.3,<5
+pdfrw>=0.4,<0.5
+psutil>=5.8.0,<6
+reportlab>=3.5.59,<4
+kaleido>=0.2.1,<0.3
+bokeh>=2.2.2,<3
+structuremap>=0.0.8,<0.1
+h5py>=3.6.0,<4