diff --git a/python/ray/tune/suggest/dragonfly.py b/python/ray/tune/suggest/dragonfly.py
index d859eabd4..14b95b77e 100644
--- a/python/ray/tune/suggest/dragonfly.py
+++ b/python/ray/tune/suggest/dragonfly.py
@@ -99,7 +99,7 @@ class DragonflySearch(Searcher):
                  **kwargs):
         assert dragonfly is not None, """dragonfly must be installed!
             You can install Dragonfly with the command:
-            `pip install dragonfly`."""
+            `pip install dragonfly-opt`."""
         assert mode in ["min", "max"], "`mode` must be 'min' or 'max'!"
 
         self._initial_points = []