diff --git a/packages/block-library/src/pullquote/style.scss b/packages/block-library/src/pullquote/style.scss
index ff5fe6068dfac..6c6557a1101fb 100644
--- a/packages/block-library/src/pullquote/style.scss
+++ b/packages/block-library/src/pullquote/style.scss
@@ -46,6 +46,10 @@
 .wp-block-pullquote.has-text-align-right blockquote {
 	text-align: right;
 }
+// Ensure that we are reasonably specific to override theme defaults.
+.wp-block-pullquote.has-text-align-center blockquote {
+	text-align: center;
+}
 
 // .is-style-solid-color is deprecated.
 // This selector has not been scoped with `:root :where`, as global styles