diff --git a/requirements.txt b/requirements.txt
index 7943d89..4e497cb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,12 +1,14 @@
-flake8
-detect-secrets
-pre-commit
-pytest
-recommonmark
-Sphinx
-sphinx-markdown-tables
-descartes
-Fiona
-folium
-geopandas
-pandas
+flake8==3.8.4
+detect-secrets==0.14.3
+pre-commit==2.9.3
+pytest==6.1.2
+recommonmark==0.6.0
+Sphinx==3.3.1
+sphinx-markdown-tables==0.0.15
+descartes==1.1.0
+Fiona==1.8.18
+folium==0.11.0
+geopandas==0.8.1
+pandas==1.1.5
+numpy==1.19.4
+pre-commit==2.9.3