diff --git a/doc/conf.py b/doc/conf.py
index e8cc32a..177ebe1 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -57,11 +57,8 @@
     "announcement": (
         "Deploy AI apps for free on "
         "<a href='https://ploomber.io/?utm_medium=readthedocs&utm_source=ploomber-engine' " # noqa
-        "style='color:#7CB9E8; text-decoration: none;' "
-        "onmouseover='this.style.color=#0077cc'; "
-        "this.style.textDecoration='underline'; "
-        "onmouseout='this.style.color='initial''; "
-        "this.style.textDecoration='none';">
+        "style='color:#7CB9E8; text-decoration: none;'"
+        "onmouseover='this.style.textDecoration=underline'>"
         "Ploomber Cloud!</a>"
     ),
     "extra_footer": "",