diff --git a/pkgs/development/python-modules/oldmemo/default.nix b/pkgs/development/python-modules/oldmemo/default.nix
index cb1eb2f29008..4152ab68500a 100644
--- a/pkgs/development/python-modules/oldmemo/default.nix
+++ b/pkgs/development/python-modules/oldmemo/default.nix
@@ -18,14 +18,14 @@
 
 buildPythonPackage rec {
   pname = "oldmemo";
-  version = "1.1.0";
+  version = "2.0.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "Syndace";
     repo = "python-oldmemo";
     tag = "v${version}";
-    hash = "sha256-iAsp42VcGsf3Nhk0I97Wi3SlpLxcA6BkVaFm1yY0HrY=";
+    hash = "sha256-upgpyNoyBUg4IskF2DeQGOwm2h+hydO9lBoIHgwho28=";
   };
 
   build-system = [
diff --git a/pkgs/development/python-modules/omemo/default.nix b/pkgs/development/python-modules/omemo/default.nix
index 6da744b55618..8f4fa6a957df 100644
--- a/pkgs/development/python-modules/omemo/default.nix
+++ b/pkgs/development/python-modules/omemo/default.nix
@@ -10,20 +10,23 @@
 
   pytestCheckHook,
   oldmemo,
+  twomemo,
+  pytest-asyncio,
+  pytest-cov-stub,
 
   # passthru
   omemo,
 }:
 buildPythonPackage rec {
   pname = "omemo";
-  version = "1.2.0";
+  version = "2.0.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "Syndace";
     repo = "python-omemo";
     tag = "v${version}";
-    hash = "sha256-egb4UFoF/gS3LKutArnJSXxDYH/xyBLOxWec98rOT9Y=";
+    hash = "sha256-uA8Nv8xT6ROlE9eM/Oz2j5HsYtvWzKEu7DSd/ws+WZY=";
   };
 
   build-system = [
@@ -40,6 +43,9 @@ buildPythonPackage rec {
   nativeCheckInputs = [
     pytestCheckHook
     oldmemo
+    twomemo
+    pytest-asyncio
+    pytest-cov-stub
   ]
   ++ oldmemo.optional-dependencies.xml;
 
diff --git a/pkgs/development/python-modules/twomemo/default.nix b/pkgs/development/python-modules/twomemo/default.nix
index a61db1d57e10..4dfbe7e1b9c4 100644
--- a/pkgs/development/python-modules/twomemo/default.nix
+++ b/pkgs/development/python-modules/twomemo/default.nix
@@ -13,14 +13,14 @@
 }:
 buildPythonPackage rec {
   pname = "twomemo";
-  version = "1.1.0";
+  version = "2.0.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "Syndace";
     repo = "python-twomemo";
     tag = "v${version}";
-    hash = "sha256-jkazeFdNK0iB76oyHbQu+TLaGz+SH/30CmqXk0K6Sy8=";
+    hash = "sha256-TNM7CLxo4C55APuL5BAts8kTyCl2SDajqwkaXxwK19E=";
   };
 
   strictDeps = true;