diff --git a/quartz/plugins/transformers/citations.ts b/quartz/plugins/transformers/citations.ts
index dcac41b2e..60f01f39d 100644
--- a/quartz/plugins/transformers/citations.ts
+++ b/quartz/plugins/transformers/citations.ts
@@ -23,7 +23,19 @@ export const Citations: QuartzTransformerPlugin<Partial<Options>> = (userOpts) =
     name: "Citations",
     htmlPlugins(ctx) {
       const plugins: PluggableList = []
-
+      // per default, rehype-citations only supports en-US
+      // see: https://github.com/timlrx/rehype-citation/issues/12
+      // in here there are multiple usable locales:
+      // https://github.com/citation-style-language/locales
+      // thus, we optimistically assume there is indeed an appropriate
+      // locale available and simply create the lang url-string
+      let lang: string = "en-US"
+      if (ctx.cfg.configuration.locale !== "en-US") {
+        lang =
+          "https://raw.githubusercontent.com/citation-style-language/locales/refs/heads/master/locales-" +
+          ctx.cfg.configuration.locale +
+          ".xml"
+      }
       // Add rehype-citation to the list of plugins
       plugins.push([
         rehypeCitation,
@@ -32,7 +44,7 @@ export const Citations: QuartzTransformerPlugin<Partial<Options>> = (userOpts) =
           suppressBibliography: opts.suppressBibliography,
           linkCitations: opts.linkCitations,
           csl: opts.csl,
-          lang: ctx.cfg.configuration.locale ?? "en-US",
+          lang: lang,
         },
       ])