diff --git a/lens-utils.cabal b/lens-utils.cabal
--- a/lens-utils.cabal
+++ b/lens-utils.cabal
@@ -2,10 +2,10 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: d7220dd813c55ce1ce3287342452592c24ae89d71e8b445c5a00625c60d7731f
+-- hash: 0602790545b326901e59379955c4541dcab52e82ef782aa8e1cedf784e484c18
 
 name:           lens-utils
-version:        1.4.4
+version:        1.4.5
 synopsis:       Collection of missing lens utilities.
 category:       Data
 stability:      experimental
diff --git a/src/Control/Lens/Aeson.hs b/src/Control/Lens/Aeson.hs
--- a/src/Control/Lens/Aeson.hs
+++ b/src/Control/Lens/Aeson.hs
@@ -24,10 +24,11 @@
 
 optionsYamlStyle :: JSON.Options
 optionsYamlStyle = JSON.defaultOptions
-    { JSON.unwrapUnaryRecords = True
-    , JSON.omitNothingFields  = True
-    , JSON.fieldLabelModifier = yaml } where
-        yaml = JSON.camelTo2 '-' . List.dropWhile (== '_')
+    { JSON.unwrapUnaryRecords     = True
+    , JSON.omitNothingFields      = True
+    , JSON.fieldLabelModifier     = yaml
+    , JSON.constructorTagModifier = yaml} where
+        yaml str = JSON.camelTo2 '-' $ List.dropWhile (== '_') str
 
 parse :: (Generic a, JSON.GFromJSON JSON.Zero (Rep a)) => JSON.Value
       -> JSON.Parser a