diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # ats-pkg
 
+## 3.2.6.1
+
+  * Display `language-ats` version when `--version` flag is passed
+
 ## 3.2.6.0
 
   * Add `license` and `changelog` field to `Debian` type
diff --git a/app/Main.hs b/app/Main.hs
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -8,8 +8,10 @@
 import           Data.Version                         hiding (Version (..))
 import           Development.Shake.ATS
 import           Development.Shake.FilePath
+import           Dhall.Version                        (dhallVersionString)
 import           Distribution.CommandLine
 import           GHC.IO.Encoding                      (setLocaleEncoding)
+import           Language.ATS                         (languageATSVersion)
 import           Language.ATS.Package
 import           Language.ATS.Package.Dhall
 import           Language.ATS.Package.Upgrade
@@ -28,7 +30,7 @@
     <> header "atspkg - a build tool for ATS\nsee 'man atspkg' for more detailed help")
 
 versionInfo :: Parser (a -> a)
-versionInfo = infoOption ("atspkg version: " ++ showVersion atspkgVersion) (short 'V' <> long "version" <> help "Show version")
+versionInfo = infoOption ("atspkg version: " ++ showVersion atspkgVersion ++ "\nlanguage-ats version: " ++ showVersion languageATSVersion ++ "\ndhall version: " ++ dhallVersionString) (short 'V' <> long "version" <> help "Show version")
 
 data Command = Install { _archTarget :: Maybe String
                        , _atspkgArg  :: Maybe String
diff --git a/ats-pkg.cabal b/ats-pkg.cabal
--- a/ats-pkg.cabal
+++ b/ats-pkg.cabal
@@ -1,6 +1,6 @@
 cabal-version:      2.0
 name:               ats-pkg
-version:            3.2.6.0
+version:            3.2.6.1
 license:            BSD3
 license-file:       LICENSE
 copyright:          Copyright: (c) 2018-2019 Vanessa McHale
@@ -149,6 +149,7 @@
         base >=4.10,
         ats-pkg -any,
         optparse-applicative -any,
+        language-ats >=1.7.4.0,
         shake-ats -any,
         microlens -any,
         temporary -any,
@@ -160,7 +161,8 @@
         bytestring -any,
         shake -any,
         cli-setup -any,
-        quaalude -any
+        quaalude -any,
+        dhall >=1.26.1
 
     if flag(development)
         ghc-options: -Werror