diff --git a/pkgs/applications/networking/gns3/default.nix b/pkgs/applications/networking/gns3/default.nix
index 44c9477c1c43..b17986daf588 100644
--- a/pkgs/applications/networking/gns3/default.nix
+++ b/pkgs/applications/networking/gns3/default.nix
@@ -3,7 +3,7 @@
 }:
 
 let
-  stableVersion = "2.2.34";
+  stableVersion = "2.2.35.1";
   previewVersion = stableVersion;
   addVersion = args:
     let version = if args.stable then stableVersion else previewVersion;
@@ -12,23 +12,18 @@ let
   extraArgs = rec {
     mkOverride = attrname: version: sha256:
       self: super: {
-        ${attrname} = super.${attrname}.overridePythonAttrs (oldAttrs: {
+        "${attrname}" = super."${attrname}".overridePythonAttrs (oldAttrs: {
           inherit version;
           src = oldAttrs.src.override {
             inherit version sha256;
           };
         });
       };
-    commonOverrides = [
-      (self: super: {
-        jsonschema = super.jsonschema_3;
-      })
-    ];
   };
   mkGui = args: libsForQt5.callPackage (import ./gui.nix (addVersion args // extraArgs)) { };
   mkServer = args: callPackage (import ./server.nix (addVersion args // extraArgs)) { };
-  guiSrcHash = "sha256-1YsVMrUYI46lJZbPjf3jnOFDr9Hp54m8DVMz9y4dvVc=";
-  serverSrcHash = "sha256-h4d9s+QvqN/EFV97rPRhQiyC06wkZ9C2af9gx1Z/x/8=";
+  guiSrcHash = "sha256-iVvADwIp01HeZoDayvH1dilYRHRkRBTBR3Fh395JBq0=";
+  serverSrcHash = "sha256-41dbiSjvmsDNYr9/rRkeQVOnPSVND34xx1SNknCgHfc=";
 
 in {
   guiStable = mkGui {
diff --git a/pkgs/applications/networking/gns3/gui.nix b/pkgs/applications/networking/gns3/gui.nix
index be08fe4f4c76..756cbd7c8b97 100644
--- a/pkgs/applications/networking/gns3/gui.nix
+++ b/pkgs/applications/networking/gns3/gui.nix
@@ -3,25 +3,15 @@
 , version
 , sha256Hash
 , mkOverride
-, commonOverrides
 }:
 
 { lib
 , python3
 , fetchFromGitHub
 , wrapQtAppsHook
-, packageOverrides ? self: super: {}
 }:
 
-let
-  defaultOverrides = commonOverrides ++ [
-  ];
-
-  python = python3.override {
-    packageOverrides = lib.foldr lib.composeExtensions (self: super: { }) ([ packageOverrides ] ++ defaultOverrides);
-  };
-
-in python.pkgs.buildPythonPackage rec {
+python3.pkgs.buildPythonPackage rec {
   pname = "gns3-gui";
   inherit version;
 
@@ -36,7 +26,7 @@ in python.pkgs.buildPythonPackage rec {
     wrapQtAppsHook
   ];
 
-  propagatedBuildInputs = with python.pkgs; [
+  propagatedBuildInputs = with python3.pkgs; [
     distro
     jsonschema
     psutil
@@ -55,10 +45,8 @@ in python.pkgs.buildPythonPackage rec {
 
   postPatch = ''
     substituteInPlace requirements.txt \
-      --replace "sentry-sdk==" "sentry-sdk>=" \
       --replace "psutil==" "psutil>=" \
-      --replace "distro==" "distro>=" \
-      --replace "setuptools==" "setuptools>="
+      --replace "jsonschema>=4.17.0,<4.18" "jsonschema"
   '';
 
   meta = with lib; {
diff --git a/pkgs/applications/networking/gns3/server.nix b/pkgs/applications/networking/gns3/server.nix
index a07409810c01..5eee199d6915 100644
--- a/pkgs/applications/networking/gns3/server.nix
+++ b/pkgs/applications/networking/gns3/server.nix
@@ -3,24 +3,14 @@
 , version
 , sha256Hash
 , mkOverride
-, commonOverrides
 }:
 
 { lib
 , python3
 , fetchFromGitHub
-, packageOverrides ? self: super: {}
 }:
 
-let
-  defaultOverrides = commonOverrides ++ [
-  ];
-
-  python = python3.override {
-    packageOverrides = lib.foldr lib.composeExtensions (self: super: { }) ([ packageOverrides ] ++ defaultOverrides);
-  };
-
-in python.pkgs.buildPythonApplication {
+python3.pkgs.buildPythonApplication {
   pname = "gns3-server";
   inherit version;
 
@@ -33,23 +23,17 @@ in python.pkgs.buildPythonApplication {
 
   postPatch = ''
     substituteInPlace requirements.txt \
-      --replace "aiohttp==" "aiohttp>=" \
-      --replace "aiofiles==" "aiofiles>=" \
-      --replace "Jinja2==" "Jinja2>=" \
-      --replace "sentry-sdk==" "sentry-sdk>=" \
-      --replace "async-timeout==" "async-timeout>=" \
       --replace "psutil==" "psutil>=" \
-      --replace "distro==" "distro>=" \
-      --replace "py-cpuinfo==" "py-cpuinfo>=" \
-      --replace "setuptools==" "setuptools>="
+      --replace "jsonschema>=4.17.0,<4.18" "jsonschema"
   '';
 
-  propagatedBuildInputs = with python.pkgs; [
+  propagatedBuildInputs = with python3.pkgs; [
     aiofiles
     aiohttp
     aiohttp-cors
     async_generator
     distro
+    importlib-resources
     jinja2
     jsonschema
     multidict