diff --git a/pkgs/development/python-modules/trimesh/default.nix b/pkgs/development/python-modules/trimesh/default.nix
index 672a0916b22f..1c191cc2991a 100644
--- a/pkgs/development/python-modules/trimesh/default.nix
+++ b/pkgs/development/python-modules/trimesh/default.nix
@@ -6,11 +6,11 @@
 
 buildPythonPackage rec {
   pname = "trimesh";
-  version = "3.18.1";
+  version = "3.18.3";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-8Jw5YmHsATchcchiPqxqxA+PYgl7elqZLqG8vTu/b0k=";
+    sha256 = "sha256-lVoBBBrzyhrSmR2FM0xo8UJBCOShwaYOrIpeAwQn76M=";
   };
 
   propagatedBuildInputs = [ numpy ];