diff --git a/sbt-app/src/sbt-test/project-load/werror/build.sbt b/sbt-app/src/sbt-test/project-load/werror/build.sbt
new file mode 100644
index 000000000..84a4df0dd
--- /dev/null
+++ b/sbt-app/src/sbt-test/project-load/werror/build.sbt
@@ -0,0 +1,6 @@
+scalaVersion := "3.7.4"
+
+@deprecated
+def foo = true
+
+fork := foo
diff --git a/sbt-app/src/sbt-test/project-load/werror/changes/build.sbt b/sbt-app/src/sbt-test/project-load/werror/changes/build.sbt
new file mode 100644
index 000000000..db42926ed
--- /dev/null
+++ b/sbt-app/src/sbt-test/project-load/werror/changes/build.sbt
@@ -0,0 +1,6 @@
+scalaVersion := "3.7.4"
+
+@deprecated
+def foo = true
+
+fork := !foo
diff --git a/sbt-app/src/sbt-test/project-load/werror/changes/p.sbt b/sbt-app/src/sbt-test/project-load/werror/changes/p.sbt
new file mode 100644
index 000000000..7c99ad44a
--- /dev/null
+++ b/sbt-app/src/sbt-test/project-load/werror/changes/p.sbt
@@ -0,0 +1 @@
+scalacOptions += "-Werror"
diff --git a/sbt-app/src/sbt-test/project-load/werror/test b/sbt-app/src/sbt-test/project-load/werror/test
new file mode 100644
index 000000000..7b9adfd60
--- /dev/null
+++ b/sbt-app/src/sbt-test/project-load/werror/test
@@ -0,0 +1,6 @@
+> name
+
+$ copy-file changes/p.sbt project/p.sbt
+$ copy-file changes/build.sbt build.sbt
+
+-> reload