diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c33cb8b..ab9ffea 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,7 +1,6 @@
 name: build
 
-on:
-  push:
+on: [push, pull_request]
 
 jobs:
   linux:
diff --git a/dpf b/dpf
index df2afed..1d5a31c 160000
--- a/dpf
+++ b/dpf
@@ -1 +1 @@
-Subproject commit df2afed246113e4459808b112583d54cf7e433e9
+Subproject commit 1d5a31c1e2fec45b23e05543c646ae6092693914