diff --git a/Makefile b/Makefile
index a97d22c..1531188 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,10 @@
 setup-env:
-	virtualenv -p python3 venv
-	source venv/bin/activate
+	python3 -m venv venv
+	. ./venv/bin/activate
 
 bootstrap:
 	@pip install -r requirements.txt
+
+clean:
+	deactivate || true
+	rm -rf venv
diff --git a/requirements.txt b/requirements.txt
index 7fc4318..94db1d1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-fiona~=1.7.13
-shapely~=1.6.4
\ No newline at end of file
+fiona~=1.10.1
+shapely~=2.1.1
\ No newline at end of file