diff --git a/packages/react-scripts/config/webpack.config.js b/packages/react-scripts/config/webpack.config.js
index ba8fd0b9b56..ca673890d63 100644
--- a/packages/react-scripts/config/webpack.config.js
+++ b/packages/react-scripts/config/webpack.config.js
@@ -516,6 +516,9 @@ module.exports = function (webpackEnv) {
                 sourceMap: isEnvProduction
                   ? shouldUseSourceMap
                   : isEnvDevelopment,
+                modules: {
+                  compileType: 'icss',
+                },
               }),
               // Don't consider CSS imports dead code even if the
               // containing package claims to have no side effects.
@@ -533,6 +536,7 @@ module.exports = function (webpackEnv) {
                   ? shouldUseSourceMap
                   : isEnvDevelopment,
                 modules: {
+                  compileType: 'module',
                   getLocalIdent: getCSSModuleLocalIdent,
                 },
               }),
@@ -549,6 +553,9 @@ module.exports = function (webpackEnv) {
                   sourceMap: isEnvProduction
                     ? shouldUseSourceMap
                     : isEnvDevelopment,
+                  modules: {
+                    compileType: 'icss',
+                  },
                 },
                 'sass-loader'
               ),
@@ -569,6 +576,7 @@ module.exports = function (webpackEnv) {
                     ? shouldUseSourceMap
                     : isEnvDevelopment,
                   modules: {
+                    compileType: 'module',
                     getLocalIdent: getCSSModuleLocalIdent,
                   },
                 },