diff --git a/Casks/torbrowser-ar.rb b/Casks/torbrowser-ar.rb
index 035e7ef75..f3f4e85fe 100644
--- a/Casks/torbrowser-ar.rb
+++ b/Casks/torbrowser-ar.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'torbrowser-ar' do
-  version '4.5.1'
-  sha256 '36764414f05b3b932c8c026e6ec89923d6fc6702620e077084d5e0c55a3d328d'
+  version '4.5.2'
+  sha256 '876936ba90d87d5cf3d9adc28f204bdeba2ee0d20c395268e29b60ee7a3e11d2'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_ar.dmg"
   gpg "#{url}.asc",
diff --git a/Casks/torbrowser-de.rb b/Casks/torbrowser-de.rb
index ba7597c52..65462488f 100644
--- a/Casks/torbrowser-de.rb
+++ b/Casks/torbrowser-de.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'torbrowser-de' do
-  version '4.5.1'
-  sha256 '48942dca848a16a940f7923d94a38eb90945be5979dbd293e96a1bccc3377331'
+  version '4.5.2'
+  sha256 '042d2bdec7447799ae6f7da7a6ec476b00e8c5d6ece0b32d5ca1255c59667272'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_de.dmg"
   gpg "#{url}.asc",
diff --git a/Casks/torbrowser-es.rb b/Casks/torbrowser-es.rb
index 714f21880..06cfb7e3f 100644
--- a/Casks/torbrowser-es.rb
+++ b/Casks/torbrowser-es.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'torbrowser-es' do
-  version '4.5.1'
-  sha256 'bb3e6635ec0ac001923bd0896a08f8be25bf56e531eec1a3f010338ec074ea86'
+  version '4.5.2'
+  sha256 '65a475b8e4085793e2cc39c92c8cbd77ca9e5cc2ee6af3d4064cdfa2a9427f8c'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_es-ES.dmg"
   gpg "#{url}.asc",
diff --git a/Casks/torbrowser-experimental.rb b/Casks/torbrowser-experimental.rb
new file mode 100644
index 000000000..29c4641e3
--- /dev/null
+++ b/Casks/torbrowser-experimental.rb
@@ -0,0 +1,13 @@
+cask :v1 => 'torbrowser-experimental' do
+  version '5.0a2'
+  sha256 '4bf5d27b592f4221c5996f1241a428402f1621c2576cb8772438d5f7c3fce320'
+
+  url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_nl.dmg"
+  gpg "#{url}.asc",
+      :key_id => 'ef6e286dda85ea2a4ba7de684e2c6e8793298290'
+  name 'Tor Browser'
+  homepage 'https://www.torproject.org/projects/torbrowser.html'
+  license :oss
+
+  app 'TorBrowser.app'
+end
diff --git a/Casks/torbrowser-fa.rb b/Casks/torbrowser-fa.rb
index 7c5c6a822..99ff43019 100644
--- a/Casks/torbrowser-fa.rb
+++ b/Casks/torbrowser-fa.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'torbrowser-fa' do
-  version '4.5.1'
-  sha256 'faf5da971b676af179404fb384a4545d1d737d6ab14577440ba75e42ac9c84fd'
+  version '4.5.2'
+  sha256 '932dd4e5bfa0265ec909a1cc069e2c5dacb93466fa7492085eb02b518c7eb20d'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_fa.dmg"
   gpg "#{url}.asc",
diff --git a/Casks/torbrowser-fr.rb b/Casks/torbrowser-fr.rb
index 2f3547d27..b11b4966d 100644
--- a/Casks/torbrowser-fr.rb
+++ b/Casks/torbrowser-fr.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'torbrowser-fr' do
-  version '4.5.1'
-  sha256 '0842d9fc34da90d3aac4b22613558dfe90893ae224bf43b1f08e8330dada46b9'
+  version '4.5.2'
+  sha256 'e343c832ab62e244120b832e054742e461e0f95b14981ed0456cce0ad8c952af'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_fr.dmg"
   gpg "#{url}.asc",
diff --git a/Casks/torbrowser-it.rb b/Casks/torbrowser-it.rb
index d150898b5..0e4d902c8 100644
--- a/Casks/torbrowser-it.rb
+++ b/Casks/torbrowser-it.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'torbrowser-it' do
-  version '4.5.1'
-  sha256 'fad247637ba33ad222a7583317126e0cd6c4ca29ef37df4742180806bf83cffb'
+  version '4.5.2'
+  sha256 'b73cf0dd55955fc730e285735ecd074aaed7f82990234c171487a46561566c6d'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_it.dmg"
   gpg "#{url}.asc",
diff --git a/Casks/torbrowser-ko.rb b/Casks/torbrowser-ko.rb
index 4c21e7835..348d1b61b 100644
--- a/Casks/torbrowser-ko.rb
+++ b/Casks/torbrowser-ko.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'torbrowser-ko' do
-  version '4.5.1'
-  sha256 '44734cbb0423626b9d1b33aecea206fd1fc005dfd59192c201fceb482204c682'
+  version '4.5.2'
+  sha256 '3ebd57ab6d15dc4699dcf90aff78899daf1ee941462f33a866fae39e059984f3'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_ko.dmg"
   gpg "#{url}.asc",
diff --git a/Casks/torbrowser-nl.rb b/Casks/torbrowser-nl.rb
index dc0ed6c99..6ee5a58ce 100644
--- a/Casks/torbrowser-nl.rb
+++ b/Casks/torbrowser-nl.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'torbrowser-nl' do
-  version '4.5.1'
-  sha256 '4e754dc76b95c65a8fb1674c20f8aff09ed220349ed05c7cfc30463de030b49a'
+  version '4.5.2'
+  sha256 '4ca65c51cbdf826b63f5aba19caf80574e57959f83672a19bfec42f4d8627230'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_nl.dmg"
   gpg "#{url}.asc",
diff --git a/Casks/torbrowser-pl.rb b/Casks/torbrowser-pl.rb
index 6ba3b89c0..5c2ac5f88 100644
--- a/Casks/torbrowser-pl.rb
+++ b/Casks/torbrowser-pl.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'torbrowser-pl' do
-  version '4.5.1'
-  sha256 'b2f7170a454d74a4afc2c9fca1cce99a27fe38804d39fbc4a1b42cb84d0f9877'
+  version '4.5.2'
+  sha256 '02db436a7965b30f29fee6cbbb2d4faa1d683203d2fb3c7f5524f74caa03ffac'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_pl.dmg"
   gpg "#{url}.asc",
diff --git a/Casks/torbrowser-pt.rb b/Casks/torbrowser-pt.rb
index 28ac9f0cf..b28ce005f 100644
--- a/Casks/torbrowser-pt.rb
+++ b/Casks/torbrowser-pt.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'torbrowser-pt' do
-  version '4.5.1'
-  sha256 '3def1f9dd7f912236c0c59b798a85bcdb8a7ce9d6d80c9a27845618a738612df'
+  version '4.5.2'
+  sha256 '84a1f8be31eaa4a9d1de2874e8995b77afa93290fd806a438a19323260519b80'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_pt-PT.dmg"
   gpg "#{url}.asc",
diff --git a/Casks/torbrowser-ru.rb b/Casks/torbrowser-ru.rb
index 8b9593a23..0de16d705 100644
--- a/Casks/torbrowser-ru.rb
+++ b/Casks/torbrowser-ru.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'torbrowser-ru' do
-  version '4.5.1'
-  sha256 '96b39fe5152ca286f405b91095c580c410ca36432949a323de6f1c4dde3f45cb'
+  version '4.5.2'
+  sha256 'e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_ru.dmg"
   gpg "#{url}.asc",
diff --git a/Casks/torbrowser-tr.rb b/Casks/torbrowser-tr.rb
index e21587e4b..63d481ffa 100644
--- a/Casks/torbrowser-tr.rb
+++ b/Casks/torbrowser-tr.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'torbrowser-tr' do
-  version '4.5.1'
-  sha256 '8d84ee1a4193f668587b36716dc9e201b51a18649ed6bf82301f87fbdba154dd'
+  version '4.5.2'
+  sha256 '75c242ae2be143e1ff30f68c91580e0ef9f5cc7866952412bc44dd88b0a9320a'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_tr.dmg"
   gpg "#{url}.asc",
diff --git a/Casks/torbrowser-vi.rb b/Casks/torbrowser-vi.rb
index 189cfc0d1..7bac2819d 100644
--- a/Casks/torbrowser-vi.rb
+++ b/Casks/torbrowser-vi.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'torbrowser-vi' do
-  version '4.5.1'
-  sha256 '1aed6dbc4179fca6900e10824e3729b8e94eab732bf2236be8380379a187426b'
+  version '4.5.2'
+  sha256 '9acc4b734aca96037a34fb069eb6f2591a4733a93e3608acfdfbbf1c6eefd523'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_vi.dmg"
   gpg "#{url}.asc",
diff --git a/Casks/torbrowser-zh.rb b/Casks/torbrowser-zh.rb
index 792cd8776..e2598d65d 100644
--- a/Casks/torbrowser-zh.rb
+++ b/Casks/torbrowser-zh.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'torbrowser-zh' do
-  version '4.5.1'
-  sha256 'a66e99de1b1e3a3fdd32c6954c9f635ae157e47c89a0888240d30d7e2c363aed'
+  version '4.5.2'
+  sha256 'd3bef6d2ae4476949bb65f82db34aaeee5e01d8bf4b32c59f3812c15428688cc'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_zh-CN.dmg"
   gpg "#{url}.asc",