diff --git a/superset/utils/pandas_postprocessing.py b/superset/utils/pandas_postprocessing.py
index d73bee6a74..47892e1c58 100644
--- a/superset/utils/pandas_postprocessing.py
+++ b/superset/utils/pandas_postprocessing.py
@@ -599,6 +599,8 @@ def _prophet_fit_and_predict(  # pylint: disable=too-many-arguments
         weekly_seasonality=weekly_seasonality,
         daily_seasonality=daily_seasonality,
     )
+    if df["ds"].dt.tz:
+        df["ds"] = df["ds"].dt.tz_convert(None)
     model.fit(df)
     future = model.make_future_dataframe(periods=periods, freq=freq)
     forecast = model.predict(future)[["ds", "yhat", "yhat_lower", "yhat_upper"]]