diff --git a/CHANGES.rst b/CHANGES.rst
index 238ed00ce7..063b12e6bc 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -86,6 +86,8 @@ Bug Fixes
 
 - Fixed viewer widgets displaying improperly if initialized out of view in Jupyter Lab. [#3299]
 
+- Fixed width of sliders in plugins to use full-width of plugin. [#3303]
+
 Cubeviz
 ^^^^^^^
 
diff --git a/jdaviz/components/plugin_slider.vue b/jdaviz/components/plugin_slider.vue
index d03da731e0..58d007c932 100644
--- a/jdaviz/components/plugin_slider.vue
+++ b/jdaviz/components/plugin_slider.vue
@@ -1,5 +1,5 @@
 <template>
-  <div>
+  <div style="width: 100%">
     <plugin-input-header
       :label="label"
       :api_hint="api_hint && api_hint + value"