diff --git a/Cargo.lock b/Cargo.lock
index ecd0fcf17..469c23aa0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3724,9 +3724,9 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
 [[package]]
 name = "tobj"
-version = "3.2.5"
+version = "4.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57381207291289bad19de63acd3fbf5948ff99b2868116c367b7224c37d55f90"
+checksum = "b450e3ba06251ec4fc76917dafeaf55805ffb26dbf7d5500bfb9511ce63a0d1f"
 dependencies = [
  "ahash 0.8.3",
 ]
diff --git a/crates/fj-viewer/Cargo.toml b/crates/fj-viewer/Cargo.toml
index 03930fcf8..cb87b8a3e 100644
--- a/crates/fj-viewer/Cargo.toml
+++ b/crates/fj-viewer/Cargo.toml
@@ -18,7 +18,7 @@ egui-wgpu = "0.21.0"
 fj-interop.workspace = true
 fj-math.workspace = true
 nalgebra = "0.32.2"
-tobj = "3.2.5"
+tobj = "4.0.0"
 raw-window-handle = "0.5.2"
 thiserror = "1.0.40"
 tracing = "0.1.37"
diff --git a/crates/fj-viewer/src/graphics/model.rs b/crates/fj-viewer/src/graphics/model.rs
index c5f07edbe..d0c9c77fd 100644
--- a/crates/fj-viewer/src/graphics/model.rs
+++ b/crates/fj-viewer/src/graphics/model.rs
@@ -95,7 +95,10 @@ pub fn load_model(
 
     let mut materials = Vec::new();
     for m in obj_materials? {
-        let texture_data: &[u8] = assets.get_asset(m.diffuse_texture.as_str());
+        let texture_data: &[u8] = match m.diffuse_texture {
+            Some(diffuse_texture) => assets.get_asset(diffuse_texture.as_str()),
+            None => continue,
+        };
 
         let diffuse_texture = texture::Texture::from_bytes(
             device,