diff --git a/Casks/thunderbird-de.rb b/Casks/thunderbird-de.rb
index 35e493726..5ed78aab1 100644
--- a/Casks/thunderbird-de.rb
+++ b/Casks/thunderbird-de.rb
@@ -1,6 +1,6 @@
 cask 'thunderbird-de' do
-  version '38.5.1'
-  sha256 '2d9bea4897507d1d7c2a7dd1b4d3921e540abfaf62bbbe0e75545ecb28aec653'
+  version '38.6.0'
+  sha256 '8b715717918e095936304dd00f74f1a866c679cc7a466e325faf75b99f741d7f'
 
   url "https://download.mozilla.org/?product=thunderbird-#{version}&os=osx&lang=de"
   name 'Mozilla Thunderbird'
diff --git a/Casks/thunderbird-fr.rb b/Casks/thunderbird-fr.rb
index 897453079..b68c2ffcc 100644
--- a/Casks/thunderbird-fr.rb
+++ b/Casks/thunderbird-fr.rb
@@ -1,6 +1,6 @@
 cask 'thunderbird-fr' do
-  version '38.5.1'
-  sha256 'dba6d6859fca6e08ccf535323881c17c42ddb39b602c6e615a5769091dd69c5e'
+  version '38.6.0'
+  sha256 '693298e738dd88c6b47615ef75385637e419f863cd811611d96a74f24fcfd57d'
 
   url "https://download.mozilla.org/?product=thunderbird-#{version}&os=osx&lang=fr"
   name 'Mozilla Thunderbird'
diff --git a/Casks/thunderbird-gl.rb b/Casks/thunderbird-gl.rb
index f751b96aa..418c5fcff 100644
--- a/Casks/thunderbird-gl.rb
+++ b/Casks/thunderbird-gl.rb
@@ -1,6 +1,6 @@
 cask 'thunderbird-gl' do
-  version '38.5.1'
-  sha256 '2f0f7b6f16b9819697c6a2d08700fc955e430d82cbfddff009262f81f1ada9e5'
+  version '38.6.0'
+  sha256 '430f1555b0ef650ecc61074586b2d9771ebb9412ddd3d832dade697b476dddff'
 
   url "https://download.mozilla.org/?product=thunderbird-#{version}&os=osx&lang=gl"
   name 'Mozilla Thunderbird'
diff --git a/Casks/thunderbird-it.rb b/Casks/thunderbird-it.rb
index 93537f0fd..a493917f2 100644
--- a/Casks/thunderbird-it.rb
+++ b/Casks/thunderbird-it.rb
@@ -1,6 +1,6 @@
 cask 'thunderbird-it' do
-  version '38.5.1'
-  sha256 'd164a6da1dfcbdb33930a40be733e74d739fb5c7561916f919ee05b1da84ec3d'
+  version '38.6.0'
+  sha256 '1f1b262a4472e7df656d9685b0ca72fb55972bd36482ab1286c8cadcf75c1180'
 
   url "https://download.mozilla.org/?product=thunderbird-#{version}&os=osx&lang=it"
   name 'Mozilla Thunderbird'
diff --git a/Casks/thunderbird-ja.rb b/Casks/thunderbird-ja.rb
index 8480a13ea..7819f618c 100644
--- a/Casks/thunderbird-ja.rb
+++ b/Casks/thunderbird-ja.rb
@@ -1,6 +1,6 @@
 cask 'thunderbird-ja' do
-  version '38.5.1'
-  sha256 'b6fb3d216f44503f086303076241ff78369d9faeef650c40d8ee88f92d155dbc'
+  version '38.6.0'
+  sha256 '77ab1099aeb9eaec6a237f95a37cc37470db25613a0b3ae0e84af957ce96725e'
 
   url "https://download.mozilla.org/?product=thunderbird-#{version}&os=osx&lang=ja-JP-mac"
   name 'Mozilla Thunderbird'
diff --git a/Casks/thunderbird-nl.rb b/Casks/thunderbird-nl.rb
index f4fe1a00c..2ab8cea84 100644
--- a/Casks/thunderbird-nl.rb
+++ b/Casks/thunderbird-nl.rb
@@ -1,6 +1,6 @@
 cask 'thunderbird-nl' do
-  version '38.5.1'
-  sha256 '6dd32d1b6963d9dfcb1eea932135830906e8f2687bf1771fcf53c740d7bcf143'
+  version '38.6.0'
+  sha256 'b626830a939382a1447fc4f25460accfba9b1e9d282586398540b5329334518e'
 
   url "https://download.mozilla.org/?product=thunderbird-#{version}&os=osx&lang=nl"
   name 'Mozilla Mozilla Thunderbird'
diff --git a/Casks/thunderbird-pt-br.rb b/Casks/thunderbird-pt-br.rb
index 0b99a94f0..58821b48d 100644
--- a/Casks/thunderbird-pt-br.rb
+++ b/Casks/thunderbird-pt-br.rb
@@ -1,6 +1,6 @@
 cask 'thunderbird-pt-br' do
-  version '38.5.1'
-  sha256 'd2bcd99b8af9243429011287df6fa3abeffbbcde7252068ce620dd089650ad07'
+  version '38.6.0'
+  sha256 'f02416f527b755f26d3904c27503c816795c079882c21600ad1e2be453b6d149'
 
   url "https://download.mozilla.org/?product=thunderbird-#{version}&os=osx&lang=pt-BR"
   name 'Mozilla Thunderbird'
diff --git a/Casks/thunderbird-ru.rb b/Casks/thunderbird-ru.rb
index 8d6cae977..c212e17d4 100644
--- a/Casks/thunderbird-ru.rb
+++ b/Casks/thunderbird-ru.rb
@@ -1,6 +1,6 @@
 cask 'thunderbird-ru' do
-  version '38.5.1'
-  sha256 '1cd6544c9a475f0ad5c4949e67568d2801cdba7b58478001c6d8e96b27d60cec'
+  version '38.6.0'
+  sha256 'c03ed3ab4355c4ebaa8db8a517b8a7bb13f0663c56e135011fc2c49187d877bf'
 
   url "https://download.mozilla.org/?product=thunderbird-#{version}&os=osx&lang=ru"
   name 'Mozilla Thunderbird'
diff --git a/Casks/thunderbird-uk.rb b/Casks/thunderbird-uk.rb
index e22978d5e..b379a361f 100644
--- a/Casks/thunderbird-uk.rb
+++ b/Casks/thunderbird-uk.rb
@@ -1,6 +1,6 @@
 cask 'thunderbird-uk' do
-  version '38.5.1'
-  sha256 'af35281921fed9b6ca3964106d72c30269f52644101c5e8c8fc855cf61d6aba6'
+  version '38.6.0'
+  sha256 '9744e315f8849e00fa1860211ae1ecec8f38c5c32d01c0fad5c6eb2ef9f35b7d'
 
   url "https://download.mozilla.org/?product=thunderbird-#{version}&os=osx&lang=uk"
   name 'Mozilla Thunderbird'
diff --git a/Casks/thunderbird-zh-cn.rb b/Casks/thunderbird-zh-cn.rb
index 13a13bf0f..2ce70ef33 100644
--- a/Casks/thunderbird-zh-cn.rb
+++ b/Casks/thunderbird-zh-cn.rb
@@ -1,6 +1,6 @@
 cask 'thunderbird-zh-cn' do
-  version '38.5.1'
-  sha256 '8e1869ce36f541c3f17bd66bdc64bb6f0302961702091d70c147d0450fc371a1'
+  version '38.6.0'
+  sha256 '2cba8e176f32e9474e66981e7021dcfda6b26383db9b044f944eadf9b72afca8'
 
   url "https://download.mozilla.org/?product=thunderbird-#{version}&os=osx&lang=zh-CN"
   name 'Mozilla Thunderbird'