diff --git a/.gitignore b/.gitignore
old mode 100755
new mode 100644
diff --git a/LICENSE b/LICENSE
old mode 100755
new mode 100644
diff --git a/README.md b/README.md
old mode 100755
new mode 100644
diff --git a/lib/eui48.rb b/lib/eui48.rb
old mode 100755
new mode 100644
diff --git a/lib/eui64.rb b/lib/eui64.rb
old mode 100755
new mode 100644
diff --git a/lib/ipv4.rb b/lib/ipv4.rb
old mode 100755
new mode 100644
diff --git a/lib/ipv4net.rb b/lib/ipv4net.rb
old mode 100755
new mode 100644
diff --git a/lib/ipv6.rb b/lib/ipv6.rb
old mode 100755
new mode 100644
diff --git a/lib/ipv6net.rb b/lib/ipv6net.rb
old mode 100755
new mode 100644
diff --git a/lib/mask128.rb b/lib/mask128.rb
old mode 100755
new mode 100644
diff --git a/lib/mask32.rb b/lib/mask32.rb
old mode 100755
new mode 100644
diff --git a/lib/netaddr.rb b/lib/netaddr.rb
old mode 100755
new mode 100644
diff --git a/lib/util.rb b/lib/util.rb
old mode 100755
new mode 100644
diff --git a/netaddr.gemspec b/netaddr.gemspec
old mode 100755
new mode 100644
diff --git a/test/eui48_test.rb b/test/eui48_test.rb
old mode 100755
new mode 100644
diff --git a/test/eui64_test.rb b/test/eui64_test.rb
old mode 100755
new mode 100644
diff --git a/test/examples.rb b/test/examples.rb
old mode 100755
new mode 100644
diff --git a/test/ipv4_test.rb b/test/ipv4_test.rb
old mode 100755
new mode 100644
diff --git a/test/ipv4net_test.rb b/test/ipv4net_test.rb
old mode 100755
new mode 100644
diff --git a/test/ipv6_test.rb b/test/ipv6_test.rb
old mode 100755
new mode 100644
diff --git a/test/ipv6net_test.rb b/test/ipv6net_test.rb
old mode 100755
new mode 100644
diff --git a/test/mask128_test.rb b/test/mask128_test.rb
old mode 100755
new mode 100644
diff --git a/test/mask32_test.rb b/test/mask32_test.rb
old mode 100755
new mode 100644
diff --git a/test/netaddr_test.rb b/test/netaddr_test.rb
old mode 100755
new mode 100644
diff --git a/test/run_all.rb b/test/run_all.rb
old mode 100755
new mode 100644