diff --git a/setup.cfg b/setup.cfg
index 696cf07b886df0e6839da8563eb76aafb87704cd..414b5a432cd89f0611c84c6d3b0a4d4bfd17f0e7 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -48,6 +48,7 @@ where = src
 [options.extras_require]
 all =
     black
+    importlib_resources
     ipykernel
     matplotlib
     numpydoc
@@ -66,6 +67,7 @@ all =
     wheel
 dev =
     black
+    importlib_resources
     ipykernel
     matplotlib
     numpydoc