diff --git a/.github/workflows/upmerge_pr.yaml b/.github/workflows/upmerge_pr.yaml
index 6c0d1ceb..51528bc5 100644
--- a/.github/workflows/upmerge_pr.yaml
+++ b/.github/workflows/upmerge_pr.yaml
@@ -23,6 +23,9 @@ jobs:
                     -
                         base_branch: "1.14"
                         target_branch: "1.15"
+                    -
+                        base_branch: "1.15"
+                        target_branch: "1.16"
 
         steps:
             -
diff --git a/composer.json b/composer.json
index edd55cb6..bba88085 100644
--- a/composer.json
+++ b/composer.json
@@ -40,7 +40,7 @@
         "symfony/options-resolver": "^6.4 || ^7.2 || ^8.0",
         "symfony/property-access": "^6.4 || ^7.2 || ^8.0",
         "symfony/validator": "^6.4 || ^7.2 || ^8.0",
-        "webmozart/assert": "^1.9"
+        "webmozart/assert": "^1.9 || ^2.3"
     },
     "replace": {
         "sylius/grid": "self.version"