diff --git a/hoauth2.cabal b/hoauth2.cabal
--- a/hoauth2.cabal
+++ b/hoauth2.cabal
@@ -1,6 +1,6 @@
 Name:                hoauth2
 -- http://wiki.haskell.org/Package_versioning_policy
-Version:             0.5.2
+Version:             0.5.3
 
 Synopsis:            Haskell OAuth2 authentication client
 Description:
@@ -59,7 +59,7 @@
 
   Build-Depends:
     base              >= 4     && < 5,
-    aeson             >= 0.9   && < 0.11,
+    aeson             >= 0.9   && < 0.12,
     text              >= 0.11  && < 1.3,
     bytestring        >= 0.9   && < 0.11,
     http-conduit      >= 2.0   && < 2.2,
@@ -108,7 +108,7 @@
                        http-conduit      >= 2.0    && < 2.2,
                        text              >= 0.11   && < 1.3,
                        bytestring        >= 0.9    && < 0.11,
-                       aeson             >= 0.9    && < 0.11,
+                       aeson             >= 0.9    && < 0.12,
                        hoauth2
 
   if impl(ghc >= 6.12.0)
@@ -132,7 +132,7 @@
                        http-conduit      >= 2.0    && < 2.2,
                        text              >= 0.11   && < 1.3,
                        bytestring        >= 0.9    && < 0.11,
-                       aeson             >= 0.9    && < 0.11,
+                       aeson             >= 0.9    && < 0.12,
                        hoauth2
 
   if impl(ghc >= 6.12.0)
@@ -155,7 +155,7 @@
                        http-conduit      >= 2.0    && < 2.2,
                        text              >= 0.11   && < 1.3,
                        bytestring        >= 0.9    && < 0.11,
-                       aeson             >= 0.9    && < 0.11,
+                       aeson             >= 0.9    && < 0.12,
                        hoauth2
 
   if impl(ghc >= 6.12.0)
@@ -178,7 +178,7 @@
                        http-conduit      >= 2.0    && < 2.2,
                        text              >= 0.11   && < 1.3,
                        bytestring        >= 0.9    && < 0.11,
-                       aeson             >= 0.9    && < 0.11,
+                       aeson             >= 0.9    && < 0.12,
                        hoauth2
 
   if impl(ghc >= 6.12.0)
@@ -197,7 +197,7 @@
   hs-source-dirs:      example
   default-language:    Haskell2010
   build-depends:       base              >= 4.5    && < 5,
-                       aeson             >= 0.9    && < 0.11,
+                       aeson             >= 0.9    && < 0.12,
                        text              >= 0.11   && < 1.3,
                        bytestring        >= 0.9    && < 0.11,
                        http-conduit      >= 2.0    && < 2.2,