diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 0478e7a..7d1b543 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -103,6 +103,12 @@ jobs:
               --version-iri "${ONTBASE}/${VERSION}" \
               --annotation owl:versionInfo "${VERSION}" \
               --output "$f"
+            TTL="${f%.owl}.ttl"
+            [ -f "$TTL" ] && robot annotate \
+              --input "$TTL" \
+              --version-iri "${ONTBASE}/${VERSION}" \
+              --annotation owl:versionInfo "${VERSION}" \
+              --output "$TTL"
           done
 
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