diff --git a/cachix-api.cabal b/cachix-api.cabal
--- a/cachix-api.cabal
+++ b/cachix-api.cabal
@@ -1,6 +1,6 @@
 cabal-version:   2.2
 name:            cachix-api
-version:         1.7.8
+version:         1.7.9
 synopsis:        Servant HTTP API specification for https://cachix.org
 homepage:        https://github.com/cachix/cachix#readme
 bug-reports:     https://github.com/cachix/cachix/issues
diff --git a/src/Cachix/Types/Deployment.hs b/src/Cachix/Types/Deployment.hs
--- a/src/Cachix/Types/Deployment.hs
+++ b/src/Cachix/Types/Deployment.hs
@@ -23,6 +23,7 @@
     index :: Int64,
     createdOn :: UTCTime,
     startedOn :: Maybe UTCTime,
+    finishedOn :: Maybe UTCTime,
     storePath :: Text,
     closureSize :: Maybe Int64,
     status :: Status