diff --git a/Casks/language-switcher.rb b/Casks/language-switcher.rb
index 2c6f4727d15..8067ee06118 100644
--- a/Casks/language-switcher.rb
+++ b/Casks/language-switcher.rb
@@ -4,6 +4,8 @@ cask :v1 => 'language-switcher' do
 
   url 'http://www.tj-hd.co.uk/downloads/Language_Switcher_1_1_7.dmg'
   name 'Language Switcher'
+  appcast 'http://feeds.tj-hd.co.uk/feeds/language_switcher/appcast.xml',
+          :sha256 => '0a33d4efed28803122f154fd8a9eb0c62f60534ca542f1fa80a98341fcce4f15'
   homepage 'http://www.tj-hd.co.uk/en-gb/languageswitcher/'
   license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder
 
diff --git a/Casks/launchpad-manager-yosemite.rb b/Casks/launchpad-manager-yosemite.rb
index e73670a77d7..83f27345aac 100644
--- a/Casks/launchpad-manager-yosemite.rb
+++ b/Casks/launchpad-manager-yosemite.rb
@@ -4,6 +4,8 @@ cask :v1 => 'launchpad-manager-yosemite' do
 
   url 'http://launchpadmanager.com/download_yosemite.php/LaunchpadManagerYosemite.dmg'
   name 'Launchpad Manager'
+  appcast 'http://launchpadmanager.com/appyos/sparkle.rss',
+          :sha256 => 'f0e662903635a480bb1cb08122f4d1f743e694442c508e5f71c522d99128abb3'
   homepage 'http://launchpadmanager.com/'
   license :commercial
 
diff --git a/Casks/leech.rb b/Casks/leech.rb
index 4f72917c9e6..63481c81d70 100644
--- a/Casks/leech.rb
+++ b/Casks/leech.rb
@@ -4,6 +4,8 @@ cask :v1 => 'leech' do
 
   url 'http://manytricks.com/download/leech'
   name 'Leech'
+  appcast 'http://manytricks.com/leech/appcast.xml',
+          :sha256 => 'ef4c85840f37dc92c0999f88e5e64acc5eb76b3e3933582710cdb703583473a1'
   homepage 'http://manytricks.com/leech/'
   license :commercial
 
diff --git a/Casks/lifeslice.rb b/Casks/lifeslice.rb
index 7d390824b8d..54634a57be6 100644
--- a/Casks/lifeslice.rb
+++ b/Casks/lifeslice.rb
@@ -5,6 +5,8 @@ cask :v1 => 'lifeslice' do
   # wanderingstan.com is the official download host per the vendor homepage
   url 'http://wanderingstan.com/apps/lifeslice/LifeSlice.dmg'
   name 'LifeSlice'
+  appcast 'http://wanderingstan.com/apps/lifeslice/sparkle-lifeslice-appcast-xml.php',
+          :sha256 => '90bd0939501fdc8a5b52bb24532919424ee1201a1b6281761b9e91d3b9068c61'
   homepage 'http://wanderingstan.github.io/Lifeslice/'
   license :oss
 
diff --git a/Casks/loading.rb b/Casks/loading.rb
index d8a1c95ab21..27c71f54bd9 100644
--- a/Casks/loading.rb
+++ b/Casks/loading.rb
@@ -4,6 +4,8 @@ cask :v1 => 'loading' do
 
   url 'http://bonzaiapps.com/loading/Loading.zip'
   name 'Loading'
+  appcast 'http://bonzaiapps.com/loading/update.xml',
+          :sha256 => '4914e37120428d0f85c54959b027cb0ae3e9b50f9c70a1eb00b985b672756c9e'
   homepage 'http://bonzaiapps.com/loading/'
   license :bsd
 
diff --git a/Casks/m3unify.rb b/Casks/m3unify.rb
index 0d82f045b7f..1e04df16ac7 100644
--- a/Casks/m3unify.rb
+++ b/Casks/m3unify.rb
@@ -4,6 +4,8 @@ cask :v1 => 'm3unify' do
 
   url 'http://dougscripts.com/itunes/scrx/m3unifyml.zip'
   name 'M3Unify'
+  appcast 'http://dougscripts.com/itunes/itinfo/m3unify_appcast.xml',
+          :sha256 => 'e2a0cd2a135e0f54344babb3300f8aeb99498953474955a9366e5f5989e05cc1'
   homepage 'http://dougscripts.com/itunes/itinfo/m3unify.php'
   license :commercial
 
diff --git a/Casks/mac2imgur.rb b/Casks/mac2imgur.rb
index ab3fe0739f2..45775467e9d 100644
--- a/Casks/mac2imgur.rb
+++ b/Casks/mac2imgur.rb
@@ -5,6 +5,8 @@ cask :v1 => 'mac2imgur' do
   # mileswd.com is the official download host per the vendor homepage
   url 'https://mileswd.com/mac2imgur/latest'
   name 'mac2imgur'
+  appcast 'https://mileswd.com/mac2imgur/update',
+          :sha256 => '1235c533476928d64f6787886a3dc78b421fe8e379cc4e936aeb44152dc09bd1'
   homepage 'https://github.com/mileswd/mac2imgur'
   license :gpl
 
diff --git a/Casks/macscale.rb b/Casks/macscale.rb
index 40dee716a8e..fd5a70bbcb6 100644
--- a/Casks/macscale.rb
+++ b/Casks/macscale.rb
@@ -5,6 +5,8 @@ cask :v1 => 'macscale' do
   # brinscall.com is the official download host per the vendor homepage
   url 'http://www.brinscall.com/MacScale.zip'
   name 'MacScale'
+  appcast 'https://www.brinscall.com/updates/macscale.xml',
+          :sha256 => 'd5796f727a8ed5e9ed5d59dce484c66a38219edad80b9fb5f6343a3857ed7c1b'
   homepage 'http://www.macscale.com'
   license :closed
 
diff --git a/Casks/magicprefs.rb b/Casks/magicprefs.rb
index cacd9c12891..f2678724967 100644
--- a/Casks/magicprefs.rb
+++ b/Casks/magicprefs.rb
@@ -4,6 +4,8 @@ cask :v1 => 'magicprefs' do
 
   url 'http://magicprefs.com/MagicPrefs.app.zip'
   name 'MagicPrefs'
+  appcast 'http://magicprefs.com/appcast.xml',
+          :sha256 => '907873f5493a31dc57884c1b34cdc36ef53eccda2a857593285e26e2016fd348'
   homepage 'http://magicprefs.com/'
   license :gratis
 
diff --git a/Casks/mail-plugin-manager.rb b/Casks/mail-plugin-manager.rb
index 5a663208187..fc44ff25865 100644
--- a/Casks/mail-plugin-manager.rb
+++ b/Casks/mail-plugin-manager.rb
@@ -4,6 +4,8 @@ cask :v1 => 'mail-plugin-manager' do
 
   url 'http://www.chungwasoft.com/files/MPM_latest.zip'
   name 'Mail Plugin Manager'
+  appcast 'https://littleknownsoftware.com/feed/mpm',
+          :sha256 => 'c03181d20c855680dffd3a0fe3552694c3eceb166af38c0c92d79af28b763fc9'
   homepage 'http://www.chungwasoft.com/mailpluginmanager/'
   license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder
 
diff --git a/Casks/mdrp.rb b/Casks/mdrp.rb
index b5f3df4488d..fe67c1c6ed0 100644
--- a/Casks/mdrp.rb
+++ b/Casks/mdrp.rb
@@ -4,6 +4,8 @@ cask :v1 => 'mdrp' do
 
   url 'http://www.macdvdripperpro.com/download/'
   name 'Mac DVDRipper Pro'
+  appcast 'http://www.macdvdripperpro.com/mdrp_sparkle5.xml',
+          :sha256 => '8e4f7c395dda29438cf1f4a931a626d484886109a01ea9ee733fa6d7c24f4634'
   homepage 'http://www.macdvdripperpro.com/'
   license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder
 
diff --git a/Casks/memorytamer.rb b/Casks/memorytamer.rb
index f5716f118f8..f4d43219e97 100644
--- a/Casks/memorytamer.rb
+++ b/Casks/memorytamer.rb
@@ -5,6 +5,8 @@ cask :v1 => 'memorytamer' do
   # amazonaws.com is the official download host per the vendor homepage
   url 'https://paddle.s3.amazonaws.com/fulfillment_downloads/1657/492767/MemoryTamer.zip'
   name 'MemoryTamer'
+  appcast 'https://rink.hockeyapp.net/api/2/apps/128ebd3240db358d4b1ea5f228269de6',
+          :sha256 => 'c256f2963829ccaa81d2bd0c98f1580bd93d0e593e946e57d5585c1c44a2bf7b'
   homepage 'http://www.memorytamer.com/'
   license :commercial
 
diff --git a/Casks/mention.rb b/Casks/mention.rb
index 403ae2bce90..fc87623923e 100644
--- a/Casks/mention.rb
+++ b/Casks/mention.rb
@@ -4,6 +4,8 @@ cask :v1 => 'mention' do
 
   url 'https://en.mention.com/downloads/mac/mention.dmg'
   name 'Mention'
+  appcast 'https://web.mention.com/uploads/appcast-mention.xml',
+          :sha256 => 'e3ee4b1624ab193b8236392da1c2051ca1ad5d8bf1c6baae76fed80cfd9d59c4'
   homepage 'https://en.mention.com/'
   license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder
 
diff --git a/Casks/menucalendarclock-ical.rb b/Casks/menucalendarclock-ical.rb
index 697b7593e9f..19f179aa676 100644
--- a/Casks/menucalendarclock-ical.rb
+++ b/Casks/menucalendarclock-ical.rb
@@ -5,6 +5,8 @@ cask :v1 => 'menucalendarclock-ical' do
   url "http://www.objectpark.net/download/MenuCalendarClock-#{version}.dmg.gz"
   container :nested => "menucalendarclock-ical-#{version}"
   name 'MenuCalendarClock'
+  appcast 'http://www.objectpark.net/appcasts/MCC3.xml',
+          :sha256 => 'd257aeaf7c2b2e59f845dedd8fa65e2fb715b7750211b66a5c471582ab9dcf67'
   homepage 'http://www.objectpark.net/en/mcc.html'
   license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder
 
diff --git a/Casks/metadatics.rb b/Casks/metadatics.rb
index c54080a26a1..5721d3d729a 100644
--- a/Casks/metadatics.rb
+++ b/Casks/metadatics.rb
@@ -4,6 +4,8 @@ cask :v1 => 'metadatics' do
 
   url 'http://www.markvapps.com/applications/metadatics/Metadatics.zip'
   name 'Metadatics'
+  appcast 'http://www.markvapps.com/applications/metadatics/metadatics_appcast.xml',
+          :sha256 => 'be165a851e1f29743a79ad4252ccda747ed2a5a5ceb11a096e83134594919eb0'
   homepage 'http://markvapps.com/metadatics'
   license :commercial
 
diff --git a/Casks/midikeys.rb b/Casks/midikeys.rb
index 4d11d7355bb..fa19eb09e36 100644
--- a/Casks/midikeys.rb
+++ b/Casks/midikeys.rb
@@ -4,6 +4,8 @@ cask :v1 => 'midikeys' do
 
   url "http://www.manyetas.com/creed/MidiKeys_#{version}.zip"
   name 'MidiKeys'
+  appcast 'http://immosw.com/versions/midikeys/appcast.xml',
+          :sha256 => '87a8ce2e45af98924bfa75dcd851579a1096a0e7d5b5d92498ec77df2d4cf283'
   homepage 'http://www.manyetas.com/creed/midikeys.html'
   license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder
 
diff --git a/Casks/milkmaid.rb b/Casks/milkmaid.rb
index 16d0512b2b2..b5705be514c 100644
--- a/Casks/milkmaid.rb
+++ b/Casks/milkmaid.rb
@@ -4,6 +4,8 @@ cask :v1_1 => 'milkmaid' do
 
   url "https://github.com/downloads/jgallen23/MilkMaid/MilkMaid-#{version}.tar.gz"
   name 'MilkMaid'
+  appcast 'https://raw.githubusercontent.com/jgallen23/MilkMaid/master/appcast.xml',
+          :sha256 => '6572d842384814eaa54ec88ba2467221aa4bd8e01ca22a00ec2b610526ee0e97'
   homepage 'https://github.com/jgallen23/MilkMaid'
   license :mit
 
diff --git a/Casks/moneyguru.rb b/Casks/moneyguru.rb
index 682bd420a9e..0f6b1d9d096 100644
--- a/Casks/moneyguru.rb
+++ b/Casks/moneyguru.rb
@@ -4,6 +4,8 @@ cask :v1 => 'moneyguru' do
 
   url "http://download.hardcoded.net/moneyguru_osx_#{version.gsub('.', '_')}.dmg"
   name 'moneyGuru'
+  appcast 'http://www.hardcoded.net/updates/moneyguru.appcast',
+          :sha256 => '8fac60f13b4295126926b07d42812d43166bb92912d0743def66d71c7a9c515b'
   homepage 'http://www.hardcoded.net/moneyguru/'
   license :bsd
 
diff --git a/Casks/mongohub.rb b/Casks/mongohub.rb
index f86f2918991..378fa95820a 100644
--- a/Casks/mongohub.rb
+++ b/Casks/mongohub.rb
@@ -4,6 +4,8 @@ cask :v1 => 'mongohub' do
 
   url 'https://mongohub.s3.amazonaws.com/MongoHub.zip'
   name 'MongoHub'
+  appcast 'https://mongohub.s3.amazonaws.com/mongohub_su_feed.xml',
+          :sha256 => 'c5c16c0ca7331624f6e8f6154b88bb16648ee66706d613c5fc0f4863ff7f1eb3'
   homepage 'https://github.com/jeromelebel/MongoHub-Mac'
   license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder
 
diff --git a/Casks/monodraw.rb b/Casks/monodraw.rb
index 215c2ec7191..2da79e90f71 100644
--- a/Casks/monodraw.rb
+++ b/Casks/monodraw.rb
@@ -4,6 +4,8 @@ cask :v1 => 'monodraw' do
 
   url 'http://updates.helftone.com/monodraw/downloads/Monodraw-latest.zip'
   name 'Monodraw'
+  appcast 'http://updates.helftone.com/monodraw/appcast-beta.xml',
+          :sha256 => 'b15571cccfb97339f5762eff8a74a4f6fd4a0a1006f41071ab05a7d5e65193cd'
   homepage 'http://monodraw.helftone.com'
   license :commercial
 
diff --git a/Casks/mp3gain-express.rb b/Casks/mp3gain-express.rb
index 3ea761db768..2a3a6f1e56a 100644
--- a/Casks/mp3gain-express.rb
+++ b/Casks/mp3gain-express.rb
@@ -4,6 +4,8 @@ cask :v1 => 'mp3gain-express' do
 
   url "http://projects.sappharad.com/mp3gain/mp3gain_mac#{version.sub('.','')}.zip"
   name 'MP3Gain Express'
+  appcast 'http://projects.sappharad.com/mp3gain/updates.xml',
+          :sha256 => '6a52d90a7579ad97a666c68c1344d2d5d57634e6d3cdc794be5e71c11aef0fe0'
   homepage 'http://projects.sappharad.com/mp3gain/'
   license :oss
 
diff --git a/Casks/myphotostream.rb b/Casks/myphotostream.rb
index 38bccfe0caa..2b559a9b029 100644
--- a/Casks/myphotostream.rb
+++ b/Casks/myphotostream.rb
@@ -4,6 +4,8 @@ cask :v1 => 'myphotostream' do
 
   url 'http://www.weareyeah.com/MyPhotostream/download'
   name 'MyPhotostream'
+  appcast 'http://www.weareyeah.com/MyPhotostream/feeds/update.appcast',
+          :sha256 => 'a310ba257cb8c82100ad68ea5332ace6b8204629d671622691cec559e783f686'
   homepage 'http://www.weareyeah.com/MyPhotostream/'
   license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder
 
diff --git a/Casks/near-lock.rb b/Casks/near-lock.rb
index 0c7bfd10802..7a963a986a2 100644
--- a/Casks/near-lock.rb
+++ b/Casks/near-lock.rb
@@ -4,6 +4,8 @@ cask :v1 => 'near-lock' do
 
   url 'http://nearlock.me/downloads/nearlock.dmg'
   name 'Near Lock'
+  appcast 'http://nearlock.me/downloads/nearlock.xml',
+          :sha256 => '47bb4ce1aa116a19412d6ff9b33615f8706140b11e5439dc0b2e63e121b1acde'
   homepage 'http://nearlock.me/'
   license :gratis
 
diff --git a/Casks/noun-project.rb b/Casks/noun-project.rb
index ad19ee5b099..f3c5fa6bf4a 100644
--- a/Casks/noun-project.rb
+++ b/Casks/noun-project.rb
@@ -5,6 +5,8 @@ cask :v1 => 'noun-project' do
   # amazonaws.com is the official download host per the vendor homepage
   url "https://s3.amazonaws.com/nounproject/mac/Noun-Project-#{version}.dmg"
   name 'Noun Project'
+  appcast 'http://thenounproject.com/for-mac/feed/',
+          :sha256 => 'f70a95f1158dd41211d4866577c33ad1959ad8ce76c2ed093ed767596620c5c4'
   homepage 'https://thenounproject.com'
   license :commercial
 
diff --git a/Casks/on-the-job.rb b/Casks/on-the-job.rb
index 949081e7994..135be5c6042 100644
--- a/Casks/on-the-job.rb
+++ b/Casks/on-the-job.rb
@@ -4,6 +4,8 @@ cask :v1 => 'on-the-job' do
 
   url 'http://stuntsoftware.com/downloads/OnTheJob.zip'
   name 'On The Job'
+  appcast 'http://stuntsoftware.com/PHP/sparkle/onthejob.php',
+          :sha256 => 'dc68765c1d326ba50aeda9af4ed46c208c6c0b9a85379eb71be0ba3a92887bd0'
   homepage 'http://stuntsoftware.com/onthejob/'
   license :commercial
 
diff --git a/Casks/opacity.rb b/Casks/opacity.rb
index 8e0b3d4e01d..38270a6d8c7 100644
--- a/Casks/opacity.rb
+++ b/Casks/opacity.rb
@@ -4,6 +4,8 @@ cask :v1 => 'opacity' do
 
   url 'http://downloads.likethought.com/opacity.zip'
   name 'Opacity'
+  appcast 'http://downloads.likethought.com/appcasts/opacity.php',
+          :sha256 => '031a196c3a9fb04b1eb31d791b154bed797a043621b8350d85eca73c113c2fe0'
   homepage 'http://likethought.com/opacity/'
   license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder
 
diff --git a/Casks/opendns-updater.rb b/Casks/opendns-updater.rb
index 1d0619f08db..b95e48d066b 100644
--- a/Casks/opendns-updater.rb
+++ b/Casks/opendns-updater.rb
@@ -4,6 +4,8 @@ cask :v1 => 'opendns-updater' do
 
   url 'http://www.opendns.com/download/mac/'
   name 'OpenDNS Updater'
+  appcast 'https://opendnsupdate.appspot.com/macupdatecheck/ipupdater/AppCast.xml',
+          :sha256 => 'd5938a67e84d710e93b5e74a1b515f6881a3f0ff251bfbb5ea61ecdf1596a4a6'
   homepage 'https://support.opendns.com/entries/23218654-Where-do-I-download-an-OpenDNS-Dynamic-IP-updater-client-'
   license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder
 
diff --git a/Casks/osculator.rb b/Casks/osculator.rb
index 1a13c71d3c5..af0b19800df 100644
--- a/Casks/osculator.rb
+++ b/Casks/osculator.rb
@@ -4,6 +4,8 @@ cask :v1 => 'osculator' do
 
   url "http://dl.osculator.net/releases/osculator-#{version}.dmg"
   name 'OSCulator'
+  appcast 'http://www.osculator.net/app/profileInfo.php',
+          :sha256 => '6a7b1bf7159f8bc547febab28a24f4800b3bc61ca9d4f9477282dbb172d63fdc'
   homepage 'http://www.osculator.net'
   license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder
 
diff --git a/Casks/pdfmasher.rb b/Casks/pdfmasher.rb
index a3317b7610c..62d90caaa8c 100644
--- a/Casks/pdfmasher.rb
+++ b/Casks/pdfmasher.rb
@@ -4,6 +4,8 @@ cask :v1 => 'pdfmasher' do
 
   url "http://download.hardcoded.net/pdfmasher_osx_#{version.gsub('.', '_')}.dmg"
   name 'PdfMasher'
+  appcast 'http://www.hardcoded.net/updates/pdfmasher.appcast',
+          :sha256 => '2007b9ce4044a444b80a80ec40016ae267a910f37880f0bed4dc881f2c3b18af'
   homepage 'http://www.hardcoded.net/pdfmasher/'
   license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder