@codecademy/gamut-styles

Index: package/dist/themes/core.js
===================================================================
--- package/dist/themes/core.js
+++ package/dist/themes/core.js
@@ -1,6 +1,6 @@
 import { createTheme } from '@codecademy/variance';
-import { borderRadii, containerQueries, corePalette, elements, fontFamily, fontSize, fontWeight, lineHeight, mediaQueries, spacing } from '../variables';
+import { borderRadii, containerQueries, corePalette, elements, fontFamily, fontSize, fontWeight, lineHeight, mediaQueries, spacing, zIndices } from '../variables';
 
 /**
  *  @description  This is the core theme that all other Codecademy themes are extended from
  * and is the only theme that gamut components are typed to. This ensures that gamut components
@@ -17,9 +17,10 @@
   fontFamily,
   lineHeight,
   fontWeight,
   spacing,
-  elements
+  elements,
+  zIndices
 }).addColors(corePalette).addColorModes('light', {
   light: {
     text: {
       _: 'navy-800',
@@ -128,5 +129,5 @@
   colors
 }) => ({
   1: `1px solid ${colors['border-primary']}`,
   2: `2px solid ${colors['border-primary']}`
-})).createScaleVariables('elements').addName('core').build();
\ No newline at end of file
+})).createScaleVariables('elements').createScaleVariables('zIndices').addName('core').build();
\ No newline at end of file