diff --git a/flake.lock b/flake.lock
index d15dc98..2549491 100644
--- a/flake.lock
+++ b/flake.lock
@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1773711031,
-        "narHash": "sha256-S7jOY+xHm8Y8N6Amm663/saMZ+VSGBGZfWiQrkVyXQM=",
+        "lastModified": 1773804142,
+        "narHash": "sha256-XiW/Tsauyig4Oog1yjxBAzTfO8HAiwtpT0uLh4QpVJ8=",
         "owner": "ryoppippi",
         "repo": "claude-code-overlay",
-        "rev": "19b4712c89218e578e93b32143e51f70022a7bfb",
+        "rev": "292f18fd1be3376acfa7e7238e4f5b4607700cd9",
         "type": "github"
       },
       "original": {
@@ -48,11 +48,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1773681856,
-        "narHash": "sha256-+bRqxoFCJFO9ZTFhcCkzNXbDT3b8AEk88fyjB7Is6eo=",
+        "lastModified": 1773810247,
+        "narHash": "sha256-6Vz1Thy/1s7z+Rq5OfkWOBAdV4eD+OrvDs10yH6xJzQ=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "57d5560ee92a424fb71fde800acd6ed2c725dfce",
+        "rev": "d47357a4c806d18a3e853ad2699eaec3c01622e7",
         "type": "github"
       },
       "original": {
@@ -119,11 +119,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1773646010,
-        "narHash": "sha256-iYrs97hS7p5u4lQzuNWzuALGIOdkPXvjz7bviiBjUu8=",
+        "lastModified": 1773734432,
+        "narHash": "sha256-IF5ppUWh6gHGHYDbtVUyhwy/i7D261P7fWD1bPefOsw=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "5b2c2d84341b2afb5647081c1386a80d7a8d8605",
+        "rev": "cda48547b432e8d3b18b4180ba07473762ec8558",
         "type": "github"
       },
       "original": {
@@ -141,11 +141,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1773785107,
-        "narHash": "sha256-AO9pqTrp/m+pPbobe9ISKOQaSqPCXLJ87A+ADVVuJyg=",
+        "lastModified": 1773868362,
+        "narHash": "sha256-xKO8rtuLbWaZD9Wcbbrs94eqF9DCuTz18AZOEMRRups=",
         "owner": "nix-community",
         "repo": "NUR",
-        "rev": "ec8410da639a9b314f867cfe808e6b9912a575b4",
+        "rev": "9b4ccdf51c867b73a6dd9d03cd577e013b43ccd9",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index d730a1f..5faf8c9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -53,11 +53,6 @@
               nixpkgs.overlays = [
                 inputs.nur.overlays.default
                 inputs.claude-code-overlay.overlays.default
-                (final: prev: {
-                  zulip = prev.zulip.override {
-                    electron_39 = final.electron_38;
-                  };
-                })
               ];
             }
           ];