diff --git a/bibcite_footnotes.info.yml b/bibcite_footnotes.info.yml
index da0a48f..f017b05 100644
--- a/bibcite_footnotes.info.yml
+++ b/bibcite_footnotes.info.yml
@@ -1,7 +1,7 @@
 name: 'BibCite Footnotes'
 type: module
 description: 'Inline footnote links for BibCite References'
-core: 8.x
+core_version_requirement: '^8.0 || ^9'
 package: 'Bibliography & Citation'
 dependencies:
   - bibcite:bibcite
diff --git a/bibcite_footnotes_article_with_citations/bibcite_footnotes_article_with_citations.info.yml b/bibcite_footnotes_article_with_citations/bibcite_footnotes_article_with_citations.info.yml
index fad6e28..3d8a67e 100644
--- a/bibcite_footnotes_article_with_citations/bibcite_footnotes_article_with_citations.info.yml
+++ b/bibcite_footnotes_article_with_citations/bibcite_footnotes_article_with_citations.info.yml
@@ -1,7 +1,7 @@
 name: 'BibCite Footnotes Article with Citations'
 type: module
 description: 'Example module to show a fully-configured content type and text format with Reference Footnotes.'
-core: 8.x
+core_version_requirement: ^8 || ^9
 package: 'Bibliography & Citation'
 dependencies:
   - bibcite_footnotees:bibcite_footnotes