diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+#### 0.2.0.10
+
+* Allow base 4.12/GHC 8.6/Stackage LTS 13. Thanks to Enis Bayramoğlu!
+
 #### 0.2.0.9
 
 * Allow `aeson 1.2.*`
diff --git a/generic-aeson.cabal b/generic-aeson.cabal
--- a/generic-aeson.cabal
+++ b/generic-aeson.cabal
@@ -1,5 +1,5 @@
 name:                generic-aeson
-version:             0.2.0.9
+version:             0.2.0.10
 synopsis:            Derivation of Aeson instances using GHC generics.
 description:         Derivation of Aeson instances using GHC generics.
 author:              Silk
@@ -27,10 +27,10 @@
     Generics.Generic.Aeson.Util
     Generics.Generic.IsEnum
   build-depends:
-      base >= 4.4 && < 4.10
-    , aeson >= 0.6 && < 1.3
+      base >= 4.4 && < 4.13
+    , aeson >= 0.6 && < 1.5
     , attoparsec >= 0.11 && < 0.14
-    , generic-deriving >= 1.6 && < 1.12
+    , generic-deriving >= 1.6 && < 1.13
     , mtl >= 2.0 && < 2.3
     , tagged >= 0.2 && < 0.9
     , text >= 0.11 && < 1.3
diff --git a/src/Generics/Generic/Aeson.hs b/src/Generics/Generic/Aeson.hs
--- a/src/Generics/Generic/Aeson.hs
+++ b/src/Generics/Generic/Aeson.hs
@@ -246,7 +246,7 @@
                                         (.: p) o)
                   modify (v:)
 
-pop :: MonadState [Value] m => m Value
+pop :: StateT [Value] Parser Value
 pop =
   do (v:vs) <- get
      put vs