diff --git a/pkgs/development/python-modules/icalendar/default.nix b/pkgs/development/python-modules/icalendar/default.nix
index c483932f3d4f..9da87158c5e0 100644
--- a/pkgs/development/python-modules/icalendar/default.nix
+++ b/pkgs/development/python-modules/icalendar/default.nix
@@ -9,12 +9,19 @@
   tzdata,
   hypothesis,
   pytestCheckHook,
+  sphinxHook,
+  sphinx-copybutton,
+  pydata-sphinx-theme,
 }:
 
 buildPythonPackage rec {
   version = "6.3.1";
   pname = "icalendar";
   pyproject = true;
+  outputs = [
+    "out"
+    "doc"
+  ];
 
   src = fetchFromGitHub {
     owner = "collective";
@@ -39,6 +46,12 @@ buildPythonPackage rec {
     tzdata
   ];
 
+  nativeBuildInputs = [
+    sphinxHook
+    sphinx-copybutton
+    pydata-sphinx-theme
+  ];
+
   nativeCheckInputs = [
     hypothesis
     pytestCheckHook