diff --git a/cfgrib/dataset.py b/cfgrib/dataset.py
index 63009722..c8ea895d 100644
--- a/cfgrib/dataset.py
+++ b/cfgrib/dataset.py
@@ -45,6 +45,7 @@
     "stepUnits",
     "stepType",
     "gridType",
+    "uvRelativeToGrid"
 ]
 
 EXTRA_DATA_ATTRIBUTES_KEYS = [