diff --git a/Gemfile.lock b/Gemfile.lock
index 9eec6dea98..9ac86078ef 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -17,7 +17,7 @@ GEM
     method_source (1.0.0)
     minitest (5.14.2)
     parallel (1.19.2)
-    parser (2.7.1.5)
+    parser (2.7.1.4)
       ast (~> 2.4.1)
     power_assert (1.2.0)
     pry (0.13.1)
@@ -27,25 +27,23 @@ GEM
     rake (13.0.1)
     regexp_parser (1.8.0)
     rexml (3.2.4)
-    rubocop (0.92.0)
+    rubocop (0.91.1)
       parallel (~> 1.10)
-      parser (>= 2.7.1.5)
+      parser (>= 2.7.1.1)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.7)
       rexml
-      rubocop-ast (>= 0.5.0)
+      rubocop-ast (>= 0.4.0, < 1.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 2.0)
-    rubocop-ast (0.7.0)
-      parser (>= 2.7.1.5)
-      strscan (>= 1.0.0)
+    rubocop-ast (0.4.2)
+      parser (>= 2.7.1.4)
     ruby-progressbar (1.10.1)
     simplecov (0.17.1)
       docile (~> 1.1)
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    strscan (1.0.3)
     test-unit (3.3.6)
       power_assert
     timecop (0.9.1)
@@ -60,7 +58,7 @@ DEPENDENCIES
   minitest (= 5.14.2)
   pry (= 0.13.1)
   rake (= 13.0.1)
-  rubocop (= 0.92.0)
+  rubocop (= 0.91.1)
   simplecov (= 0.17.1)
   test-unit (= 3.3.6)
   timecop (= 0.9.1)
diff --git a/faker.gemspec b/faker.gemspec
index cd5fddadd7..cab1446a46 100644
--- a/faker.gemspec
+++ b/faker.gemspec
@@ -32,7 +32,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency('minitest', '5.14.2')
   spec.add_development_dependency('pry', '0.13.1')
   spec.add_development_dependency('rake', '13.0.1')
-  spec.add_development_dependency('rubocop', '0.92.0')
+  spec.add_development_dependency('rubocop', '0.91.1')
   spec.add_development_dependency('simplecov', '0.17.1')
   spec.add_development_dependency('test-unit', '3.3.6')
   spec.add_development_dependency('timecop', '0.9.1')