diff --git a/csquotes.def b/csquotes.def
index c98c2ea..209f639 100644
--- a/csquotes.def
+++ b/csquotes.def
@@ -387,8 +387,20 @@
 \DeclareQuoteAlias{british}{ukenglish}
 \DeclareQuoteAlias{hungarian}{magyar}
 \DeclareQuoteAlias{german}{ngerman}
+\DeclareQuoteAlias{german}{german-de}
+\DeclareQuoteAlias{german}{german-germany}
+\DeclareQuoteAlias{german}{german-de-1901}
+\DeclareQuoteAlias{german}{german-germany-1901}
 \DeclareQuoteAlias{austrian}{naustrian}
+\DeclareQuoteAlias{austrian}{german-at}
+\DeclareQuoteAlias{austrian}{german-austria}
+\DeclareQuoteAlias{austrian}{german-at-1901}
+\DeclareQuoteAlias{austrian}{german-austria-1901}
 \DeclareQuoteAlias{swissgerman}{nswissgerman}
+\DeclareQuoteAlias{swissgerman}{german-ch}
+\DeclareQuoteAlias{swissgerman}{german-switzerland}
+\DeclareQuoteAlias{swissgerman}{german-ch-1901}
+\DeclareQuoteAlias{swissgerman}{german-switzerland-1901}
 \DeclareQuoteAlias{norwegian}{norsk}
 \DeclareQuoteAlias{norwegian}{nynorsk}
 \DeclareQuoteAlias{portuguese}{portuges}