diff --git a/config/hosts/mastodon/mastodon.nix b/config/hosts/mastodon/mastodon.nix
index d9c9f71..e5249d8 100644
--- a/config/hosts/mastodon/mastodon.nix
+++ b/config/hosts/mastodon/mastodon.nix
@@ -16,14 +16,14 @@ let
   };
   mastodonNekoverseOverlay = final: prev: {
     mastodon = (prev.mastodon.override rec {
-      version = "4.3.8";
+      version = "4.3.9";
       srcOverride = final.applyPatches {
         src = pkgs.stdenv.mkDerivation {
           name = "mastodonWithThemes";
           src = pkgs.fetchgit {
             url = "https://github.com/mastodon/mastodon.git";
             rev = "v${version}";
-            sha256 = "sha256-08AApylDOz8oExZ0cRaZTgNAuP+1wiLkx0SDhkO2fMM=";
+            sha256 = "sha256-A2WxVwaarT866s97uwfStBVtv7T5czF7ymRswtZ2K4M=";
           };
           # mastodon ships with broken symlinks, disable the check for that for now
           dontCheckForBrokenSymlinks = true;
diff --git a/flake.lock b/flake.lock
index 34cb259..8c02ce9 100644
--- a/flake.lock
+++ b/flake.lock
@@ -118,11 +118,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1751201298,
-        "narHash": "sha256-Vev0zwGq3SdXWYUYa+zMLI0vyqIaYbSwZzAEqHNaG1c=",
+        "lastModified": 1751582995,
+        "narHash": "sha256-u7ubvtxdTnFPpV27AHpgoKn7qHuE7sgWgza/1oj5nzA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "7821ec89cbd9ae16ac64a896695f69010a14d296",
+        "rev": "7a732ed41ca0dd64b4b71b563ab9805a80a7d693",
         "type": "github"
       },
       "original": {
@@ -150,11 +150,11 @@
     },
     "nixpkgs-master": {
       "locked": {
-        "lastModified": 1751225728,
-        "narHash": "sha256-3SkElpRtpLPPUsD2Th60pznnT5Y3wKjOwivSAekPPpI=",
+        "lastModified": 1751655236,
+        "narHash": "sha256-2QDfhYjPFui9iQNTXBLcbffWVWbYLntm9EM/eFU3kX8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "6193b8d04ba5a5358cac7402b51948fe70b33b19",
+        "rev": "e1dca425c33650ae9ea15e577012d49586f29cef",
         "type": "github"
       },
       "original": {
@@ -166,11 +166,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1751203939,
-        "narHash": "sha256-omYD+H5LlSihz2DRfv90I8Oeo7JNEwvcHPHX+6nMIM4=",
+        "lastModified": 1751619433,
+        "narHash": "sha256-5aZFBHQNQzrfCisewtYBDNbiKcHbxPYChiP4dkEcSXQ=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "650e71cbf76de8dd16f5648a96981b726c4ef8fe",
+        "rev": "a2867cc3f8acc944cb19fe0b73c840e9fa1ba589",
         "type": "github"
       },
       "original": {