diff --git a/.changeset/nine-geese-rest.md b/.changeset/nine-geese-rest.md
index 246afafe10..da91c6234b 100644
--- a/.changeset/nine-geese-rest.md
+++ b/.changeset/nine-geese-rest.md
@@ -2,4 +2,5 @@
 '@backstage/cli': patch
 ---
 
-Changed Rollup configuration for TypeScript definition plugin to ignore css files.
+Changed Rollup configuration for TypeScript definition plugin to ignore `css`,
+`scss`, `sass`, `svg`, `eot`, `woff`, `woff2` and `ttf` files.
diff --git a/packages/cli/src/lib/builder/config.ts b/packages/cli/src/lib/builder/config.ts
index 47a1873551..1cfaf15bfc 100644
--- a/packages/cli/src/lib/builder/config.ts
+++ b/packages/cli/src/lib/builder/config.ts
@@ -154,7 +154,16 @@ export async function makeRollupConfigs(
         file: resolvePath(distDir, 'index.d.ts'),
         format: 'es',
       },
-      external: [/\.css$/],
+      external: [
+        /\.css$/,
+        /\.scss$/,
+        /\.sass$/,
+        /\.svg$/,
+        /\.eot$/,
+        /\.woff$/,
+        /\.woff2$/,
+        /\.ttf$/,
+      ],
       onwarn,
       plugins: [dts()],
     });