diff --git a/build-constraints.yaml b/build-constraints.yaml
index 4464feea..21c9eab8 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -470,6 +470,7 @@ packages:
     "Jon Schoning <jonschoning@gmail.com> @jonschoning":
         - pinboard
         - swagger-petstore < 0 # via katip
+        - espial
 
     "Jasper Van der Jeugt @jaspervdj":
         - blaze-html