diff --git a/pkgs/by-name/ba/backblaze-b2/package.nix b/pkgs/by-name/ba/backblaze-b2/package.nix
index 7feab2059fbd..1948edf4aebc 100644
--- a/pkgs/by-name/ba/backblaze-b2/package.nix
+++ b/pkgs/by-name/ba/backblaze-b2/package.nix
@@ -46,7 +46,10 @@ python3Packages.buildPythonApplication (finalAttrs: {
     setuptools
   ];
 
-  pythonRelaxDeps = [ "phx-class-registry" ];
+  pythonRelaxDeps = [
+    "docutils"
+    "phx-class-registry"
+  ];
 
   nativeCheckInputs = with python3Packages; [
     backoff