diff --git a/src/opnsense/www/themes/opnsense-dark/build/css/dashboard.css b/src/opnsense/www/themes/opnsense-dark/build/css/dashboard.css
index 514724a67..23a113f86 100644
--- a/src/opnsense/www/themes/opnsense-dark/build/css/dashboard.css
+++ b/src/opnsense/www/themes/opnsense-dark/build/css/dashboard.css
@@ -140,8 +140,15 @@ td {
   margin: 5px;
 }
 
+.canvas-container-noaspectratio {
+  position: relative;
+}
+
 .canvas-container {
   position: relative;
+  /* ChartJS v4 workaround: https://github.com/chartjs/Chart.js/issues/11005 */
+  aspect-ratio: 2;
+  overflow: hidden;
 }
 
 .cpu-canvas-container {
diff --git a/src/opnsense/www/themes/opnsense/build/css/dashboard.css b/src/opnsense/www/themes/opnsense/build/css/dashboard.css
index 7226a514b..4e678612d 100644
--- a/src/opnsense/www/themes/opnsense/build/css/dashboard.css
+++ b/src/opnsense/www/themes/opnsense/build/css/dashboard.css
@@ -140,8 +140,15 @@ td {
   margin: 5px;
 }
 
+.canvas-container-noaspectratio {
+  position: relative;
+}
+
 .canvas-container {
   position: relative;
+  /* ChartJS v4 workaround: https://github.com/chartjs/Chart.js/issues/11005 */
+  aspect-ratio: 2;
+  overflow: hidden;
 }
 
 .cpu-canvas-container {