diff --git a/packages/react-router-config/rollup.config.js b/packages/react-router-config/rollup.config.js
index 5c452b8d87..ae2323fb84 100644
--- a/packages/react-router-config/rollup.config.js
+++ b/packages/react-router-config/rollup.config.js
@@ -16,7 +16,7 @@ function isBareModuleId(id) {
 const cjs = [
   {
     input: "modules/index.js",
-    output: { file: `cjs/${pkg.name}.js`, format: "cjs" },
+    output: { file: `cjs/${pkg.name}.js`, format: "cjs", esModule: false },
     external: isBareModuleId,
     plugins: [
       babel({ exclude: /node_modules/ }),
diff --git a/packages/react-router-dom/rollup.config.js b/packages/react-router-dom/rollup.config.js
index d0108718d8..1680977e24 100644
--- a/packages/react-router-dom/rollup.config.js
+++ b/packages/react-router-dom/rollup.config.js
@@ -16,7 +16,7 @@ function isBareModuleId(id) {
 const cjs = [
   {
     input: "modules/index.js",
-    output: { file: `cjs/${pkg.name}.js`, format: "cjs" },
+    output: { file: `cjs/${pkg.name}.js`, format: "cjs", esModule: false },
     external: isBareModuleId,
     plugins: [
       babel({ exclude: /node_modules/ }),
diff --git a/packages/react-router/rollup.config.js b/packages/react-router/rollup.config.js
index efb022b9ea..68a0e91ef4 100644
--- a/packages/react-router/rollup.config.js
+++ b/packages/react-router/rollup.config.js
@@ -16,7 +16,7 @@ function isBareModuleId(id) {
 const cjs = [
   {
     input: "modules/index.js",
-    output: { file: `cjs/${pkg.name}.js`, format: "cjs" },
+    output: { file: `cjs/${pkg.name}.js`, format: "cjs", esModule: false },
     external: isBareModuleId,
     plugins: [
       babel({ exclude: /node_modules/ }),