diff --git a/CHANGES.md b/CHANGES.md
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,7 @@
+## 0.4.0.11 (2016-09-14)
+
+ * Support aeson 1.0.
+
 ## 0.4.0.10 (2016-05-28)
 
  * GHC 8.0 support.
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -18,6 +18,19 @@
 and then visit [http://localhost:8000/](http://localhost:8000/) in
 your web browser.
 
+To make full use out of this module you must first enable GC
+statistics collection in the run-time system. To enable GC
+statistics collection, either run your program with
+
+> +RTS -T
+
+or compile it with
+
+> -with-rtsopts=-T
+
+The runtime overhead of `-T` is very small so it's safe to always
+leave it enabled.
+
 # JSON API
 
 The monitoring server also lets you to retrieve the stats as JSON.
diff --git a/System/Remote/Monitoring.hs b/System/Remote/Monitoring.hs
--- a/System/Remote/Monitoring.hs
+++ b/System/Remote/Monitoring.hs
@@ -67,7 +67,7 @@
 
 -- $configuration
 --
--- To make full use out of this this module you must first enable GC
+-- To make full use out of this module you must first enable GC
 -- statistics collection in the run-time system. To enable GC
 -- statistics collection, either run your program with
 --
diff --git a/ekg.cabal b/ekg.cabal
--- a/ekg.cabal
+++ b/ekg.cabal
@@ -1,5 +1,5 @@
 name:                ekg
-version:             0.4.0.10
+version:             0.4.0.11
 synopsis:            Remote monitoring of processes
 description:
   This library lets you remotely monitor a running process over HTTP.
@@ -38,7 +38,7 @@
     System.Remote.Snap
 
   build-depends:
-    aeson < 0.12,
+    aeson < 1.1,
     base >= 4.5 && < 4.10,
     bytestring < 1.0,
     ekg-core >= 0.1 && < 0.2,