diff --git a/config.yml b/config.yml
index de2f3806edb3..f7c9d8776a2a 100644
--- a/config.yml
+++ b/config.yml
@@ -55,7 +55,7 @@ params:
   current_version:      "5.3.0-alpha2"
   current_ruby_version: "5.3.0-alpha2"
   docs_version:         "5.3"
-  rfs_version:          "v9.0.6"
+  rfs_version:          "v10.0.0"
   github_org:           "https://github.com/twbs"
   repo:                 "https://github.com/twbs/bootstrap"
   twitter:              "getbootstrap"
diff --git a/scss/vendor/_rfs.scss b/scss/vendor/_rfs.scss
index c7dcc52c895c..aa1f82b96189 100644
--- a/scss/vendor/_rfs.scss
+++ b/scss/vendor/_rfs.scss
@@ -1,4 +1,4 @@
-// stylelint-disable property-disallowed-list, scss/dollar-variable-default
+// stylelint-disable scss/dimension-no-non-numeric-values
 
 // SCSS RFS mixin
 //
@@ -154,8 +154,7 @@ $rfs-mq-property-height: if($rfs-mode == max-media-query, max-height, min-height
     &.enable-rfs {
       @content;
     }
-  }
-  @else {
+  } @else {
     @content;
   }
 }
@@ -168,7 +167,7 @@ $rfs-mq-property-height: if($rfs-mode == max-media-query, max-height, min-height
       @content;
     }
 
-    @include _rfs-media-query {
+    @include _rfs-media-query () {
       .enable-rfs &,
       &.enable-rfs {
         @content;
@@ -182,7 +181,7 @@ $rfs-mq-property-height: if($rfs-mode == max-media-query, max-height, min-height
         @content;
       }
     }
-    @include _rfs-media-query {
+    @include _rfs-media-query () {
       @content;
     }
   }
@@ -193,12 +192,12 @@ $rfs-mq-property-height: if($rfs-mode == max-media-query, max-height, min-height
   // Convert to list
   $values: if(type-of($values) != list, ($values,), $values);
 
-  $val: '';
+  $val: "";
 
   // Loop over each value and calculate value
   @each $value in $values {
     @if $value == 0 {
-      $val: $val + ' 0';
+      $val: $val + " 0";
     }
     @else {
       // Cache $value unit
@@ -206,15 +205,14 @@ $rfs-mq-property-height: if($rfs-mode == max-media-query, max-height, min-height
 
       @if $unit == px {
         // Convert to rem if needed
-        $val: $val + ' ' + if($rfs-unit == rem, #{divide($value, $value * 0 + $rfs-rem-value)}rem, $value);
+        $val: $val + " " + if($rfs-unit == rem, #{divide($value, $value * 0 + $rfs-rem-value)}rem, $value);
       }
       @else if $unit == rem {
         // Convert to px if needed
-        $val: $val + ' ' + if($rfs-unit == px, #{divide($value, $value * 0 + 1) * $rfs-rem-value}px, $value);
-      }
-      @else {
+        $val: $val + " " + if($rfs-unit == px, #{divide($value, $value * 0 + 1) * $rfs-rem-value}px, $value);
+      } @else {
         // If $value isn't a number (like inherit) or $value has a unit (not px or rem, like 1.5em) or $ is 0, just print the value
-        $val: $val + ' ' + $value;
+        $val: $val + " " + $value;
       }
     }
   }
@@ -228,30 +226,26 @@ $rfs-mq-property-height: if($rfs-mode == max-media-query, max-height, min-height
   // Convert to list
   $values: if(type-of($values) != list, ($values,), $values);
 
-  $val: '';
+  $val: "";
 
   // Loop over each value and calculate value
   @each $value in $values {
     @if $value == 0 {
-      $val: $val + ' 0';
-    }
-
-    @else {
+      $val: $val + " 0";
+    } @else {
       // Cache $value unit
       $unit: if(type-of($value) == "number", unit($value), false);
 
       // If $value isn't a number (like inherit) or $value has a unit (not px or rem, like 1.5em) or $ is 0, just print the value
       @if not $unit or $unit != px and $unit != rem {
-        $val: $val + ' ' + $value;
-      }
-
-      @else {
+        $val: $val + " " + $value;
+      } @else {
         // Remove unit from $value for calculations
         $value: divide($value, $value * 0 + if($unit == px, 1, divide(1, $rfs-rem-value)));
 
         // Only add the media query if the value is greater than the minimum value
         @if abs($value) <= $rfs-base-value or not $enable-rfs {
-          $val: $val + ' ' +  if($rfs-unit == rem, #{divide($value, $rfs-rem-value)}rem, #{$value}px);
+          $val: $val + " " + if($rfs-unit == rem, #{divide($value, $rfs-rem-value)}rem, #{$value}px);
         }
         @else {
           // Calculate the minimum value
@@ -273,7 +267,7 @@ $rfs-mq-property-height: if($rfs-mode == max-media-query, max-height, min-height
           $variable-width: #{divide($value-diff * 100, $rfs-breakpoint)}#{$variable-unit};
 
           // Return the calculated value
-          $val: $val + ' calc(' + $min-width + if($value < 0, ' - ', ' + ') + $variable-width + ')';
+          $val: $val + " calc(" + $min-width + if($value < 0, " - ", " + ") + $variable-width + ")";
         }
       }
     }
@@ -287,22 +281,22 @@ $rfs-mq-property-height: if($rfs-mode == max-media-query, max-height, min-height
 @mixin rfs($values, $property: font-size) {
   @if $values != null {
     $val: rfs-value($values);
-    $fluidVal: rfs-fluid-value($values);
+    $fluid-val: rfs-fluid-value($values);
 
     // Do not print the media query if responsive & non-responsive values are the same
-    @if $val == $fluidVal {
+    @if $val == $fluid-val {
       #{$property}: $val;
     }
     @else {
-      @include _rfs-rule {
-        #{$property}: if($rfs-mode == max-media-query, $val, $fluidVal);
+      @include _rfs-rule () {
+        #{$property}: if($rfs-mode == max-media-query, $val, $fluid-val);
 
         // Include safari iframe resize fix if needed
         min-width: if($rfs-safari-iframe-resize-bug-fix, (0 * 1vw), null);
       }
 
-      @include _rfs-media-query-rule {
-        #{$property}: if($rfs-mode == max-media-query, $fluidVal, $val);
+      @include _rfs-media-query-rule () {
+        #{$property}: if($rfs-mode == max-media-query, $fluid-val, $val);
       }
     }
   }