diff --git a/requirements.txt b/requirements.txt
index 60066db..0a4eea6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ arcgis==1.6.1
 geopandas==0.5.0
 folium==0.9.1
 requests==2.22.0
-petl==1.2.0
+petl==1.6.8
 sortedcontainers==2.1.0
 rasterio
 boto3