diff --git a/pkgs/applications/networking/gns3/default.nix b/pkgs/applications/networking/gns3/default.nix
index 1e6a0fd5b7f5..71044bd0f181 100644
--- a/pkgs/applications/networking/gns3/default.nix
+++ b/pkgs/applications/networking/gns3/default.nix
@@ -1,7 +1,7 @@
 { callPackage }:
 
 let
-  stableVersion = "2.2.3";
+  stableVersion = "2.2.5";
   previewVersion = stableVersion;
   addVersion = args:
     let version = if args.stable then stableVersion else previewVersion;
@@ -9,8 +9,8 @@ let
     in args // { inherit version branch; };
   mkGui = args: callPackage (import ./gui.nix (addVersion args)) { };
   mkServer = args: callPackage (import ./server.nix (addVersion args)) { };
-  guiSrcHash = "1l40q3d3hsmhgwb4d8hj73vhgckm0dvsc6l6qzacypd202iq1v8a";
-  serverSrcHash = "1qcypb1rmfdl8fl3ykqf5phcapmjid6jrxd6xpncd5dhyl2hr94n";
+  guiSrcHash = "1yxwbz93x9hn5y6dir8v7bdfsmfgppvjg4z88l8gx82hhf2476fx";
+  serverSrcHash = "1d3m8qrz82g8ii6q6j015wqwp6j0415fbqbjvw43zhdx5mnn962d";
 in {
   guiStable = mkGui {
     stable = true;
diff --git a/pkgs/applications/networking/gns3/gui.nix b/pkgs/applications/networking/gns3/gui.nix
index 7c155181c502..d978b060aab2 100644
--- a/pkgs/applications/networking/gns3/gui.nix
+++ b/pkgs/applications/networking/gns3/gui.nix
@@ -5,6 +5,13 @@
 let
   python = python3.override {
     packageOverrides = self: super: {
+      psutil = super.psutil.overridePythonAttrs (oldAttrs: rec {
+        version = "5.6.3";
+        src = oldAttrs.src.override {
+          inherit version;
+          sha256 = "1wv31zly44qj0rp2acg58xbnc7bf6ffyadasq093l455q30qafl6";
+        };
+      });
       jsonschema = super.jsonschema.overridePythonAttrs (oldAttrs: rec {
         version = "2.6.0";
         src = oldAttrs.src.override {
diff --git a/pkgs/applications/networking/gns3/server.nix b/pkgs/applications/networking/gns3/server.nix
index db2e085c180d..d6c6b65846c9 100644
--- a/pkgs/applications/networking/gns3/server.nix
+++ b/pkgs/applications/networking/gns3/server.nix
@@ -5,6 +5,13 @@
 let
   python = python3.override {
     packageOverrides = self: super: {
+      psutil = super.psutil.overridePythonAttrs (oldAttrs: rec {
+        version = "5.6.3";
+        src = oldAttrs.src.override {
+          inherit version;
+          sha256 = "1wv31zly44qj0rp2acg58xbnc7bf6ffyadasq093l455q30qafl6";
+        };
+      });
       jsonschema = super.jsonschema.overridePythonAttrs (oldAttrs: rec {
         version = "2.6.0";
         src = oldAttrs.src.override {
@@ -28,6 +35,8 @@ in python.pkgs.buildPythonPackage {
   postPatch = ''
     # Only 2.x is problematic:
     sed -iE "s/prompt-toolkit==1.0.15/prompt-toolkit<2.0.0/" requirements.txt
+    # yarl 1.4+ only requires Python 3.6+
+    sed -iE "s/yarl==1.3.0//" requirements.txt
   '';
 
   propagatedBuildInputs = with python.pkgs; [