diff --git a/pkgs/development/python-modules/biopython/close_parser_on_time.patch b/pkgs/development/python-modules/biopython/close_parser_on_time.patch
deleted file mode 100644
index 05d22e22ed9e..000000000000
--- a/pkgs/development/python-modules/biopython/close_parser_on_time.patch
+++ /dev/null
@@ -1,18 +0,0 @@
-diff --git a/Bio/SeqIO/SeqXmlIO.py b/Bio/SeqIO/SeqXmlIO.py
-index 8fe75ebb728..6758317d05f 100644
---- a/Bio/SeqIO/SeqXmlIO.py
-+++ b/Bio/SeqIO/SeqXmlIO.py
-@@ -498,11 +498,12 @@ def iterate(self, handle):
-             if not text:
-                 break
-             parser.feed(text)
-+        # Closing the parser ensures that all XML data fed into it are processed
-+        parser.close()
-         # We have reached the end of the XML file;
-         # send out the remaining records
-         yield from records
-         records.clear()
--        parser.close()
- 
- 
- class SeqXmlWriter(SequenceWriter):
diff --git a/pkgs/development/python-modules/biopython/default.nix b/pkgs/development/python-modules/biopython/default.nix
index 051f66845dec..e4fbe51cbb5d 100644
--- a/pkgs/development/python-modules/biopython/default.nix
+++ b/pkgs/development/python-modules/biopython/default.nix
@@ -9,22 +9,16 @@
 
 buildPythonPackage rec {
   pname = "biopython";
-  version = "1.83";
+  version = "1.85";
   pyproject = true;
 
   disabled = pythonOlder "3.9";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-eOa/t43mMDQDev01/nfLbgqeW2Jwa+z3in2SKxbtg/c=";
+    hash = "sha256-Xa+rdAWd5OePSfa1aE7drm585G8Jz6BZwdEznoseoKY=";
   };
 
-  patches = [
-    # cherry-picked from https://github.com/biopython/biopython/commit/3f9bda7ef44f533dadbaa0de29ac21929bc0b2f1
-    # fixes SeqXMLIO parser to process all data. remove on next update
-    ./close_parser_on_time.patch
-  ];
-
   build-system = [ setuptools ];
 
   dependencies = [ numpy ];