diff --git a/build-constraints.yaml b/build-constraints.yaml
index 2531abaf..b6385ea7 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1538,6 +1538,12 @@ packages:
     "Tim Baumann <tim@timbaumann.info> @timjb":
         - engine-io-yesod
 
+    "Yuras Shumovich <shumovichy@gmai.com> @Yuras":
+        - pdf-toolbox-core
+        - pdf-toolbox-content
+        - pdf-toolbox-document
+        - io-region
+
     "Stackage upper bounds":
         # https://github.com/fpco/stackage/issues/537
         - zlib < 0.6