diff --git a/hugo.toml b/hugo.toml
index 4837e46..45b73b1 100644
--- a/hugo.toml
+++ b/hugo.toml
@@ -12,6 +12,9 @@ paginate = 99999
 # Allow direct HTML.
 markup.goldmark.renderer.unsafe = true
 
+# Prevent URLs from becoming links which open in the same tab.
+markup.goldmark.extensions.linkify = false
+
 #[markup.tableOfContents]
 #  startLevel = 2
 #  endLevel = 5