diff --git a/data/theme/gnome-shell-high-contrast.css b/data/theme/gnome-shell-high-contrast.css
index ed003f451..b899b5433 100644
--- a/data/theme/gnome-shell-high-contrast.css
+++ b/data/theme/gnome-shell-high-contrast.css
@@ -300,7 +300,7 @@ StScrollBar {
   padding-bottom: 6px; }
 
 .mount-question-dialog-subject {
-  max-width: 500px; }
+  max-width: 34em; }
 
 .show-processes-dialog-subject:rtl,
 .mount-question-dialog-subject:rtl {
@@ -345,7 +345,7 @@ StScrollBar {
 
 /* Password or Authentication Dialog */
 .prompt-dialog {
-  width: 500px;
+  width: 34em;
   border: 3px solid rgba(238, 238, 236, 0.2); }
 
 .prompt-dialog-main-layout {
@@ -1010,9 +1010,9 @@ StScrollBar {
 
 /* NETWORK DIALOGS */
 .nm-dialog {
-  max-height: 500px;
-  min-height: 450px;
-  min-width: 470px; }
+  max-height: 34em;
+  min-height: 31em;
+  min-width: 32em; }
 
 .nm-dialog-content {
   spacing: 20px;
diff --git a/data/theme/gnome-shell-sass b/data/theme/gnome-shell-sass
index e94bce1fc..b0640081e 160000
--- a/data/theme/gnome-shell-sass
+++ b/data/theme/gnome-shell-sass
@@ -1 +1 @@
-Subproject commit e94bce1fcfbcbe00f6a6375e992192c9e1a4ffb5
+Subproject commit b0640081e72fa96cd9e54e794e1cad45350ef232
diff --git a/data/theme/gnome-shell.css b/data/theme/gnome-shell.css
index 90aef5061..3896c99be 100644
--- a/data/theme/gnome-shell.css
+++ b/data/theme/gnome-shell.css
@@ -300,7 +300,7 @@ StScrollBar {
   padding-bottom: 6px; }
 
 .mount-question-dialog-subject {
-  max-width: 500px; }
+  max-width: 34em; }
 
 .show-processes-dialog-subject:rtl,
 .mount-question-dialog-subject:rtl {
@@ -345,7 +345,7 @@ StScrollBar {
 
 /* Password or Authentication Dialog */
 .prompt-dialog {
-  width: 500px;
+  width: 34em;
   border: 3px solid rgba(238, 238, 236, 0.2); }
 
 .prompt-dialog-main-layout {
@@ -1010,9 +1010,9 @@ StScrollBar {
 
 /* NETWORK DIALOGS */
 .nm-dialog {
-  max-height: 500px;
-  min-height: 450px;
-  min-width: 470px; }
+  max-height: 34em;
+  min-height: 31em;
+  min-width: 32em; }
 
 .nm-dialog-content {
   spacing: 20px;