diff --git a/P5/Source/Specs/constraintSpec.xml b/P5/Source/Specs/constraintSpec.xml
index b936185206..1495d3fa27 100644
--- a/P5/Source/Specs/constraintSpec.xml
+++ b/P5/Source/Specs/constraintSpec.xml
@@ -63,7 +63,7 @@
       </sch:rule>
     </constraint>
   </constraintSpec>
-  <constraintSpec ident="context-required" scheme="schematron" type="deprecationWarning" validUntil="2025-03-15" xml:lang="en">
+  <constraintSpec ident="context-required" scheme="schematron" type="deprecationWarning" validUntil="2025-04-15" xml:lang="en">
     <desc type="deprecationInfo" versionDate="2024-03-15" xml:lang="en">
       The use of ISO Schematron <gi>sch:assert</gi> and
       <gi>sch:report</gi> elements without a parent <gi>sch:rule</gi>