diff --git a/CHANGELOG.md b/CHANGELOG.md
index 04926f9d3..f33b9493d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+== v3.0.0 ==
+Change the version back to semver to not violate our schema.
+
 == v2 ==
 Update Terraform to filter only trigger_enrichment messages.
 Enrichment lambdas do not attempt to filter based on body JSON.
diff --git a/src/lambdas/determine_legislation_provisions/index.py b/src/lambdas/determine_legislation_provisions/index.py
index 41528935c..3c9d660ad 100644
--- a/src/lambdas/determine_legislation_provisions/index.py
+++ b/src/lambdas/determine_legislation_provisions/index.py
@@ -43,7 +43,7 @@ def add_timestamp_and_engine_version(file_data):
         "uk:tna-enrichment-engine",
         attrs={"xmlns:uk": "https://caselaw.nationalarchives.gov.uk/akn"},
     )
-    enrichment_version.string = "2"
+    enrichment_version.string = "3.0.0"
     soup.proprietary.append(enrichment_version)
     soup.FRBRManifestation.FRBRdate.insert_after(enriched_date)