diff --git a/.changeset/popular-clocks-whisper.md b/.changeset/popular-clocks-whisper.md
new file mode 100644
index 0000000000..7c1d86ab03
--- /dev/null
+++ b/.changeset/popular-clocks-whisper.md
@@ -0,0 +1,5 @@
+---
+'@backstage/cli': patch
+---
+
+Fixed a bug where package exports entry points could not be `.tsx` files.
diff --git a/packages/cli/src/lib/builder/config.ts b/packages/cli/src/lib/builder/config.ts
index 8035796cba..99d8e96498 100644
--- a/packages/cli/src/lib/builder/config.ts
+++ b/packages/cli/src/lib/builder/config.ts
@@ -157,7 +157,7 @@ export async function makeRollupConfigs(
         paths.resolveTargetRoot(
           'dist-types',
           relativePath(paths.targetRoot, targetDir),
-          e.path.replace(/\.ts$/, '.d.ts'),
+          e.path.replace(/\.(?:ts|tsx)$/, '.d.ts'),
         ),
       ]),
     );