diff --git a/README.md b/README.md
index 88173a82..08903849 100644
--- a/README.md
+++ b/README.md
@@ -71,6 +71,7 @@ Build settings are configurable in `tup.config`.
 - `CONFIG_DEFAULT_ADVPNG`: Command line to pass to `advpng`.
 - `CONFIG_TRAINERS_{OPTIPNG,ADVPNG}`: Compression options for `trainers/` only.
 - `CONFIG_DEX_{OPTIPNG,ADVPNG}`: Compression options for `dex/` only.
+- `CONFIG_MODELS_{OPTIPNG,ADVPNG}`: Compression options for `models/` only.
 
 For example, these settings reflect the compression settings for the files chaos uploaded in `src/`:
 ```
diff --git a/Tupfile.lua b/Tupfile.lua
index f8fc9da1..3237935e 100644
--- a/Tupfile.lua
+++ b/Tupfile.lua
@@ -32,7 +32,8 @@ tup.rule(
 function fbsprite(input, output)
     tup.foreach_rule(
         input,
-        "^ fbsprite %f^ tools/fbsprite.sh %f %o",
+        "^ fbsprite %f^ " .. makecmd{"tools/fbsprite.sh %f %o",
+                                     compresspng{config="MODELS"}},
         output
     )
 end
@@ -40,7 +41,8 @@ end
 function twittersprite(input, output)
     tup.foreach_rule(
         input,
-        "^ twittersprite %f^ tools/twittersprite.sh %f %o",
+        "^ twittersprite %f^ " .. makecmd{"tools/twittersprite.sh %f %o",
+                                         compresspng{config="MODELS"}},
         output
     )
 end