diff --git a/setup.py b/setup.py
index 1ba7c559..b008f375 100644
--- a/setup.py
+++ b/setup.py
@@ -30,6 +30,7 @@
         "pydata-sphinx-theme",
         "sphinx                 >= 3.0.2",
         "sphinx-design",
+        "sphinx_gallery",
     ],
     "tests": [
         "coverage               >= 5.0",