diff --git a/_pkgdown.yml b/_pkgdown.yml
index 278f507..989024d 100644
--- a/_pkgdown.yml
+++ b/_pkgdown.yml
@@ -79,5 +79,6 @@ figures:
   fig.width: 10
   fig.height: 5
 template:
+  bootstrap: 5
   params:
     bootswatch: cosmo