diff --git a/binder/requirements.txt b/binder/requirements.txt
index 0a4deb8..123831c 100644
--- a/binder/requirements.txt
+++ b/binder/requirements.txt
@@ -1,2 +1,2 @@
-cartopy
+cartopy==0.18.0
 # seaborn==0.8.1
\ No newline at end of file