diff --git a/bento.info b/bento.info
index 45f57a36..f1cbabc1 100644
--- a/bento.info
+++ b/bento.info
@@ -151,6 +151,9 @@ Library:
     Extension: skimage.restoration._denoise_cy
         Sources:
             skimage/restoration/_denoise_cy.pyx
+    Extension: skimage.feature._hessian_det_appx
+        Sources:
+            skimage/exposure/_hessian_det_appx.pyx
 
 Executable: skivi
     Module: skimage.scripts.skivi