diff --git a/.changes/v1.15/BUG FIXES-20260417-181051.yaml b/.changes/v1.15/BUG FIXES-20260417-181051.yaml
new file mode 100644
index 0000000000..8f63d015cf
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+++ b/.changes/v1.15/BUG FIXES-20260417-181051.yaml	
@@ -0,0 +1,5 @@
+kind: BUG FIXES
+body: Fix `validate` not returning JSON for some early diagnostics
+time: 2026-04-17T18:10:51.004741+02:00
+custom:
+    Issue: "38400"