diff --git a/rules/catch-or-return.js b/rules/catch-or-return.js
index c12b82fc..6d3bfb6b 100644
--- a/rules/catch-or-return.js
+++ b/rules/catch-or-return.js
@@ -8,7 +8,7 @@
 
 const getDocsUrl = require('./lib/get-docs-url')
 const isPromise = require('./lib/is-promise')
-const isMemberCallWithObjectName = require('./lib/is-member-call-with-object-name')
+const isMemberCallWithObjectName = require('./lib/is-member-call-with-object-name.js')
 
 module.exports = {
   meta: {
diff --git a/rules/lib/is-member-call-with-object-name b/rules/lib/is-member-call-with-object-name.js
similarity index 100%
rename from rules/lib/is-member-call-with-object-name
rename to rules/lib/is-member-call-with-object-name.js
diff --git a/rules/prefer-await-to-then.js b/rules/prefer-await-to-then.js
index 09532477..9780edca 100644
--- a/rules/prefer-await-to-then.js
+++ b/rules/prefer-await-to-then.js
@@ -7,7 +7,7 @@
 
 const { getAncestors, getScope } = require('./lib/eslint-compat')
 const getDocsUrl = require('./lib/get-docs-url')
-const isMemberCallWithObjectName = require('./lib/is-member-call-with-object-name')
+const isMemberCallWithObjectName = require('./lib/is-member-call-with-object-name.js')
 
 module.exports = {
   meta: {