diff --git a/defaultToAny.js b/defaultToAny.js
index 7d10e7b0b8..038730c86e 100644
--- a/defaultToAny.js
+++ b/defaultToAny.js
@@ -1,4 +1,4 @@
-import arrayReduce from './.internal/arrayReduce'
+import arrayReduce from './.internal/arrayReduce.js'
 import defaultTo from './defaultTo.js'
 
 /**
diff --git a/isArguments.js b/isArguments.js
index 0bfdbe12cb..acddb7fcb6 100644
--- a/isArguments.js
+++ b/isArguments.js
@@ -1,5 +1,5 @@
 import getTag from './.internal/getTag.js'
-import isObjectLike from './isObjectLike'
+import isObjectLike from './isObjectLike.js'
 
 /**
  * Checks if `value` is likely an `arguments` object.
diff --git a/isSet.js b/isSet.js
index bcb41befa0..51195abe63 100644
--- a/isSet.js
+++ b/isSet.js
@@ -1,6 +1,6 @@
 import getTag from './.internal/getTag.js'
 import nodeTypes from './.internal/nodeTypes.js'
-import isObjectLike from './isObjectLike'
+import isObjectLike from './isObjectLike.js'
 
 /* Node.js helper references. */
 const nodeIsSet = nodeTypes && nodeTypes.isSet
diff --git a/isTypedArray.js b/isTypedArray.js
index 564ec0107f..4912626dc6 100644
--- a/isTypedArray.js
+++ b/isTypedArray.js
@@ -1,6 +1,6 @@
 import getTag from './.internal/getTag.js'
 import nodeTypes from './.internal/nodeTypes.js'
-import isObjectLike from './isObjectLike'
+import isObjectLike from './isObjectLike.js'
 
 /** Used to match `toStringTag` values of typed arrays. */
 const reTypedTag = /^\[object (?:Float(?:32|64)|(?:Int|Uint)(?:8|16|32)|Uint8Clamped)\]$/
diff --git a/isWeakMap.js b/isWeakMap.js
index e1e2226eab..0271dca456 100644
--- a/isWeakMap.js
+++ b/isWeakMap.js
@@ -1,5 +1,5 @@
 import getTag from './.internal/getTag.js'
-import isObjectLike from './isObjectLike'
+import isObjectLike from './isObjectLike.js'
 
 /**
  * Checks if `value` is classified as a `WeakMap` object.
diff --git a/isWeakSet.js b/isWeakSet.js
index e371002cb3..a14b579145 100644
--- a/isWeakSet.js
+++ b/isWeakSet.js
@@ -1,5 +1,5 @@
 import getTag from './.internal/getTag.js'
-import isObjectLike from './isObjectLike'
+import isObjectLike from './isObjectLike.js'
 
 /**
  * Checks if `value` is classified as a `WeakSet` object.