diff --git a/web_src/css/themes/theme-forgejo-dark.css b/web_src/css/themes/theme-forgejo-dark.css
index c4d7287ff..9622add8e 100644
--- a/web_src/css/themes/theme-forgejo-dark.css
+++ b/web_src/css/themes/theme-forgejo-dark.css
@@ -228,6 +228,7 @@
   /* should ideally be --color-text-dark, see #15651 */
   --color-reaction-bg: #ffffff12;
   --color-reaction-active-bg: var(--color-primary-alpha-30);
+  --color-reaction-hover-bg: var(--color-primary-alpha-40);
   --color-tooltip-text: #ffffff;
   --color-tooltip-bg: #000000f0;
   --color-nav-bg: var(--steel-900);
diff --git a/web_src/css/themes/theme-forgejo-light.css b/web_src/css/themes/theme-forgejo-light.css
index 9ad58879a..201818964 100644
--- a/web_src/css/themes/theme-forgejo-light.css
+++ b/web_src/css/themes/theme-forgejo-light.css
@@ -244,6 +244,7 @@
   /* should ideally be --color-text-dark, see #15651 */
   --color-reaction-bg: #0000000a;
   --color-reaction-active-bg: var(--color-primary-alpha-20);
+  --color-reaction-hover-bg: var(--color-primary-alpha-30);
   --color-tooltip-text: #ffffff;
   --color-tooltip-bg: #000000f0;
   --color-nav-bg: var(--zinc-100);