diff --git a/pkgs/development/python-modules/elementpath/default.nix b/pkgs/development/python-modules/elementpath/default.nix
index 1d2d34541fa6..697ea742adae 100644
--- a/pkgs/development/python-modules/elementpath/default.nix
+++ b/pkgs/development/python-modules/elementpath/default.nix
@@ -1,17 +1,14 @@
-{ buildPythonPackage
-, lib
-, fetchFromGitHub
-}:
+{ lib, buildPythonPackage, fetchFromGitHub }:
 
 buildPythonPackage rec {
-  version = "1.1.8";
+  version = "1.3.0";
   pname = "elementpath";
 
   src = fetchFromGitHub {
     owner = "sissaschool";
     repo = "elementpath";
     rev = "v${version}";
-    sha256 = "0krczvf8r6pb3hb8qaxl9h2b4qwg180xk66gyxjf002im7ri75aj";
+    sha256 = "0ahqqqpcf3fd6xcdhiwwscincyj6h5xyjaacnqxwph1y1b8mnzyw";
   };
 
   # avoid circular dependency with xmlschema which directly depends on this
diff --git a/pkgs/development/python-modules/xmlschema/default.nix b/pkgs/development/python-modules/xmlschema/default.nix
index c021bde60cd8..bd5f9eb40b88 100644
--- a/pkgs/development/python-modules/xmlschema/default.nix
+++ b/pkgs/development/python-modules/xmlschema/default.nix
@@ -4,14 +4,14 @@
 }:
 
 buildPythonPackage rec {
-  version = "1.0.13";
+  version = "1.0.15";
   pname = "xmlschema";
 
   src = fetchFromGitHub {
     owner = "sissaschool";
     repo = "xmlschema";
     rev = "v${version}";
-    sha256 = "182439gqhlxhr9rdi9ak33z4ffy1w9syhykkckkl6mq050c80qdr";
+    sha256 = "1s8ggvy2s7513cxcal3r37rn1bhpkxhq3hs5m9pgvmrysxjdz8lb";
   };
 
   propagatedBuildInputs = [ elementpath ];
@@ -25,6 +25,7 @@ buildPythonPackage rec {
       --replace "SKIP_REMOTE_TESTS = " "SKIP_REMOTE_TESTS = True #"
     pytest . \
       --ignore=xmlschema/tests/test_factory.py \
+      --ignore=xmlschema/tests/test_memory.py \
       --ignore=xmlschema/tests/test_validators.py \
       --ignore=xmlschema/tests/test_schemas.py \
       -k 'not element_tree_import_script'