diff --git a/rspec-core/.rubocop_rspec_base.yml b/rspec-core/.rubocop_rspec_base.yml
index 5db043be7..4743e12d3 100644
--- a/rspec-core/.rubocop_rspec_base.yml
+++ b/rspec-core/.rubocop_rspec_base.yml
@@ -1,4 +1,4 @@
-# This file was generated on 2020-09-28T16:30:00+02:00 from the rspec-dev repo.
+# This file was generated on 2020-09-28T21:53:37+02:00 from the rspec-dev repo.
 # DO NOT modify it by hand as your changes will get lost the next time it is generated.
 
 # This file contains defaults for RSpec projects. Individual projects
diff --git a/rspec-core/.travis.yml b/rspec-core/.travis.yml
index f304b42d7..a7a79dc7a 100644
--- a/rspec-core/.travis.yml
+++ b/rspec-core/.travis.yml
@@ -1,4 +1,4 @@
-# This file was generated on 2020-09-28T16:30:00+02:00 from the rspec-dev repo.
+# This file was generated on 2020-09-28T21:53:37+02:00 from the rspec-dev repo.
 # DO NOT modify it by hand as your changes will get lost the next time it is generated.
 
 # In order to install old Rubies, we need to use old Ubuntu distibution.
@@ -41,6 +41,8 @@ matrix:
       env: JRUBY_OPTS='--dev --1.8'
     - rvm: 2.7.1
       env: DIFF_LCS_VERSION="~> 1.3.0"
+    - rvm: 2.7.1
+      env: DIFF_LCS_VERSION="1.4.3"
   allow_failures:
     - rvm: jruby-head
     - rvm: ruby-head
diff --git a/rspec-core/appveyor.yml b/rspec-core/appveyor.yml
index 693d22ede..d01ae06d7 100644
--- a/rspec-core/appveyor.yml
+++ b/rspec-core/appveyor.yml
@@ -1,4 +1,4 @@
-# This file was generated on 2020-09-28T16:30:00+02:00 from the rspec-dev repo.
+# This file was generated on 2020-09-28T21:53:37+02:00 from the rspec-dev repo.
 # DO NOT modify it by hand as your changes will get lost the next time it is generated.
 
 version: "{build}"
diff --git a/rspec-core/script/clone_all_rspec_repos b/rspec-core/script/clone_all_rspec_repos
index e1ff463e4..910fb3529 100755
--- a/rspec-core/script/clone_all_rspec_repos
+++ b/rspec-core/script/clone_all_rspec_repos
@@ -1,5 +1,5 @@
 #!/bin/bash
-# This file was generated on 2020-09-28T16:30:00+02:00 from the rspec-dev repo.
+# This file was generated on 2020-09-28T21:53:37+02:00 from the rspec-dev repo.
 # DO NOT modify it by hand as your changes will get lost the next time it is generated.
 
 set -e
diff --git a/rspec-core/script/functions.sh b/rspec-core/script/functions.sh
index 0147304b0..a48893aa6 100644
--- a/rspec-core/script/functions.sh
+++ b/rspec-core/script/functions.sh
@@ -1,4 +1,4 @@
-# This file was generated on 2020-09-28T16:30:00+02:00 from the rspec-dev repo.
+# This file was generated on 2020-09-28T21:53:37+02:00 from the rspec-dev repo.
 # DO NOT modify it by hand as your changes will get lost the next time it is generated.
 
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
diff --git a/rspec-core/script/predicate_functions.sh b/rspec-core/script/predicate_functions.sh
index 5ec2dd6f6..0976b1ccd 100644
--- a/rspec-core/script/predicate_functions.sh
+++ b/rspec-core/script/predicate_functions.sh
@@ -1,4 +1,4 @@
-# This file was generated on 2020-09-28T16:30:00+02:00 from the rspec-dev repo.
+# This file was generated on 2020-09-28T21:53:37+02:00 from the rspec-dev repo.
 # DO NOT modify it by hand as your changes will get lost the next time it is generated.
 
 function is_mri {
diff --git a/rspec-core/script/run_build b/rspec-core/script/run_build
index 5b465fe78..87fb8a6ad 100755
--- a/rspec-core/script/run_build
+++ b/rspec-core/script/run_build
@@ -1,5 +1,5 @@
 #!/bin/bash
-# This file was generated on 2020-09-28T16:30:00+02:00 from the rspec-dev repo.
+# This file was generated on 2020-09-28T21:53:37+02:00 from the rspec-dev repo.
 # DO NOT modify it by hand as your changes will get lost the next time it is generated.
 
 set -e
diff --git a/rspec-core/script/travis_functions.sh b/rspec-core/script/travis_functions.sh
index b724dfabb..6aa13ff24 100644
--- a/rspec-core/script/travis_functions.sh
+++ b/rspec-core/script/travis_functions.sh
@@ -1,4 +1,4 @@
-# This file was generated on 2020-09-28T16:30:00+02:00 from the rspec-dev repo.
+# This file was generated on 2020-09-28T21:53:37+02:00 from the rspec-dev repo.
 # DO NOT modify it by hand as your changes will get lost the next time it is generated.
 
 # Taken from:
diff --git a/rspec-core/script/update_rubygems_and_install_bundler b/rspec-core/script/update_rubygems_and_install_bundler
index 023348734..5d4428ba5 100755
--- a/rspec-core/script/update_rubygems_and_install_bundler
+++ b/rspec-core/script/update_rubygems_and_install_bundler
@@ -1,5 +1,5 @@
 #!/bin/bash
-# This file was generated on 2020-09-28T16:30:00+02:00 from the rspec-dev repo.
+# This file was generated on 2020-09-28T21:53:37+02:00 from the rspec-dev repo.
 # DO NOT modify it by hand as your changes will get lost the next time it is generated.
 
 set -e