diff --git a/bddl/generated_data/substance_hyperparams.csv b/bddl/generated_data/substance_hyperparams.csv
index 8b6325cb..d985e9ca 100644
--- a/bddl/generated_data/substance_hyperparams.csv
+++ b/bddl/generated_data/substance_hyperparams.csv
@@ -994,7 +994,7 @@ spaghetti,spaghetti.n.01,gpt,"{""type"": ""macro_physical_particle"", ""particle
 spray_paint,spray_paint.n.01,manual,"{""type"": ""macro_visual_particle"", ""relative_particle_scaling"": false}"
 stain,stain.n.01,manual,"{""type"": ""macro_visual_particle"", ""relative_particle_scaling"": true}"
 stucco,stucco.n.01,manual,"{""type"": ""macro_visual_particle"", ""relative_particle_scaling"": true}"
-stuffing,stuffing.n.01,gpt,"{""type"": ""fluid"", ""particle_density"": 645,0, ""particle_contact_offset"": 0.015, ""is_viscous"": false, ""material_mtl_name"": ""PeanutButter"", ""customize_material_kwargs"": {""specular_transmission_color"": [0.545, 0.271, 0.075], ""diffuse_reflection_color"": [0.545, 0.271, 0.075], ""specular_transmission_scattering_color"": [0.545, 0.271, 0.075]}}"
+stuffing,stuffing.n.01,gpt,"{""type"": ""fluid"", ""particle_density"": 645.0, ""particle_contact_offset"": 0.015, ""is_viscous"": false, ""material_mtl_name"": ""PeanutButter"", ""customize_material_kwargs"": {""specular_transmission_color"": [0.545, 0.271, 0.075], ""diffuse_reflection_color"": [0.545, 0.271, 0.075], ""specular_transmission_scattering_color"": [0.545, 0.271, 0.075]}}"
 sugar_coffee_scrub,sugar_coffee_scrub.n.01,manual,"{""type"": ""macro_visual_particle"", ""relative_particle_scaling"": false}"
 sugar_syrup,sugar_syrup.n.01,manual,"{""type"": ""fluid"", ""particle_contact_offset"": 0.012, ""particle_density"": 1420.0, ""is_viscous"": true, ""material_mtl_name"": ""DeepWater"", ""customize_material_kwargs"": {""specular_transmission_weight"": 0.7, ""specular_transmission_scattering_depth"": 0.0, ""specular_transmission_color"": [1.0, 0.98, 0.92], ""specular_transmission_scattering_color"": [0.57, 0.57, 0.57]}}"
 sunflower_seed,sunflower_seed.n.01,manual,"{""type"": ""granular"", ""particle_density"": 894.0}"