diff --git a/pkgs/development/python-modules/ocrmypdf/default.nix b/pkgs/development/python-modules/ocrmypdf/default.nix
index a268f34cc71..fe521180280 100644
--- a/pkgs/development/python-modules/ocrmypdf/default.nix
+++ b/pkgs/development/python-modules/ocrmypdf/default.nix
@@ -80,6 +80,12 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
+  postPatch = ''
+    # https://github.com/ocrmypdf/OCRmyPDF/issues/933
+    substituteInPlace setup.cfg \
+      --replace "pdfminer.six!=20200720,>=20191110,<=20211012" "pdfminer.six!=20200720,>=20191110,<=20220319"
+  '';
+
   pythonImportsCheck = [
     "ocrmypdf"
   ];