diff --git a/docs/source/_static/custom.css b/docs/source/_static/custom.css
index 87ea26ec3..5fcf0d318 100644
--- a/docs/source/_static/custom.css
+++ b/docs/source/_static/custom.css
@@ -40,20 +40,6 @@ div.admonition-video > p.admonition-title::after {
   content: "\f008";
 }
 
-/*terms with tooltips*/
-
-a.hxr-hoverxref {
-  text-decoration: underline;
-  text-decoration-style: dotted;
-  text-decoration-thickness: 2px;
-  text-decoration-color: var(--color-link-underline);
-  border-bottom: none;
-}
-
-a.hxr-hoverxref:hover {
-  text-decoration-color: var(--color-link-underline--hover);
-}
-
 /* second column of API autosummaries should break more and be a bit smaller */
 table.autosummary td:nth-child(2) {
   FONT-WEIGHT: 300;
diff --git a/requirements.txt b/requirements.txt
index 76a798e56..34b4f83a0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,6 @@ holoviews
 pyviz_comms
 jupyter-server-proxy
 massql
-sphinx-hoverxref
 
 
 pyopenms