diff --git a/requirements.txt b/requirements.txt
index e4ea109..6586809 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 setuptools >= 17.0
 numpy >= 1.10
 coordstring >= 0.1.2
-picogeojson >= 0.6.1
+picogeojson >= 0.6.1,< 0.6.3
 pyproj >= 1.9
 gdal >= 1.10
 blosc >= 1.2.8