diff --git a/Changelog.md b/Changelog.md
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,7 @@
+## 1.3.7
+
+* Increased the upper-bound of `aeson` and `vector`.
+
 ## 1.3.6
 
 * Increased the upper-bound of `base` and `transformers`.
diff --git a/socket-io.cabal b/socket-io.cabal
--- a/socket-io.cabal
+++ b/socket-io.cabal
@@ -1,5 +1,5 @@
 name: socket-io
-version: 1.3.6
+version: 1.3.7
 homepage: http://github.com/ocharles/engine.io
 license: BSD3
 license-file: LICENSE
@@ -22,7 +22,7 @@
     FlexibleContexts, OverloadedStrings, RankNTypes
 
   build-depends:
-    aeson >=0.7 && <0.12,
+    aeson >=0.7 && <1.2,
     attoparsec >=0.10 && <0.14,
     base >=4.6 && <4.10,
     bytestring >=0.10 && <0.11,
@@ -32,7 +32,7 @@
     text >=0.11 && <1.3,
     transformers >=0.2 && <0.6,
     unordered-containers >=0.2 && <0.3,
-    vector >=0.10 && <0.12
+    vector >=0.10 && <0.13
 
   hs-source-dirs: src
   default-language: Haskell2010