diff --git a/docs/React.md b/docs/React.md
index cc41134..7d9d333 100644
--- a/docs/React.md
+++ b/docs/React.md
@@ -155,7 +155,7 @@ A rendering function.
 #### `UISpec`
 
 ``` purescript
-type UISpec props state eff = { render :: Render props state eff, displayName :: String, getInitialState :: UIRef -> Eff (props :: ReactProps props, state :: ReactState Disallowed state, refs :: ReactRefs Disallowed | eff) state, componentWillMount :: UIRef -> Eff (props :: ReactProps props, state :: ReactState ReadWrite state, refs :: ReactRefs Disallowed | eff) Unit, componentDidMount :: UIRef -> Eff (props :: ReactProps props, state :: ReactState ReadWrite state, refs :: ReactRefs ReadOnly | eff) Unit, componentWillReceiveProps :: UIRef -> Eff (props :: ReactProps props, state :: ReactState ReadWrite state, refs :: ReactRefs ReadOnly | eff) Unit, shouldComponentUpdate :: UIRef -> Eff (props :: ReactProps props, state :: ReactState ReadWrite state, refs :: ReactRefs ReadOnly | eff) Boolean, componentWillUpdate :: UIRef -> Eff (props :: ReactProps props, state :: ReactState ReadWrite state, refs :: ReactRefs ReadOnly | eff) Unit, componentDidUpdate :: UIRef -> Eff (props :: ReactProps props, state :: ReactState ReadOnly state, refs :: ReactRefs ReadOnly | eff) Unit, componentWillUnmount :: UIRef -> Eff (props :: ReactProps props, state :: ReactState ReadOnly state, refs :: ReactRefs ReadOnly | eff) Unit }
+type UISpec props state eff = { render :: Render props state eff, displayName :: String, getInitialState :: UIRef -> Eff (props :: ReactProps props, state :: ReactState Disallowed state, refs :: ReactRefs Disallowed | eff) state, componentWillMount :: UIRef -> Eff (props :: ReactProps props, state :: ReactState ReadWrite state, refs :: ReactRefs Disallowed | eff) Unit, componentDidMount :: UIRef -> Eff (props :: ReactProps props, state :: ReactState ReadWrite state, refs :: ReactRefs ReadOnly | eff) Unit, componentWillReceiveProps :: UIRef -> props -> Eff (props :: ReactProps props, state :: ReactState ReadWrite state, refs :: ReactRefs ReadOnly | eff) Unit, shouldComponentUpdate :: UIRef -> props -> state -> Eff (props :: ReactProps props, state :: ReactState ReadWrite state, refs :: ReactRefs ReadOnly | eff) Boolean, componentWillUpdate :: UIRef -> props -> state -> Eff (props :: ReactProps props, state :: ReactState ReadWrite state, refs :: ReactRefs ReadOnly | eff) Unit, componentDidUpdate :: UIRef -> props -> state -> Eff (props :: ReactProps props, state :: ReactState ReadOnly state, refs :: ReactRefs ReadOnly | eff) Unit, componentWillUnmount :: UIRef -> Eff (props :: ReactProps props, state :: ReactState ReadOnly state, refs :: ReactRefs ReadOnly | eff) Unit }
 ```
 
 A specification of a component.
diff --git a/src/React.js b/src/React.js
index d5b17e5..2222024 100644
--- a/src/React.js
+++ b/src/React.js
@@ -41,6 +41,34 @@ exports.mkUI = function(ss) {
           if (s === "displayName") {
             result[s] = ss[s];
           }
+          else if (s === "componentWillReceiveProps") {
+            result[s] = (function(impl) {
+                return function(nextProps) {
+                    return impl(this)(nextProps)();
+                }
+            })(ss[s]);
+          }
+          else if (s === "shouldComponentUpdate") {
+            result[s] = (function(impl) {
+                return function(nextProps, nextState) {
+                    return impl(this)(nextProps)(nextState.state)();
+                }
+            })(ss[s]);
+          }
+          else if (s === "componentWillUpdate") {
+            result[s] = (function(impl) {
+                return function(nextProps, nextState) {
+                    return impl(this)(nextProps)(nextState.state)();
+                }
+            })(ss[s]);
+          }
+          else if (s === "componentDidUpdate") {
+            result[s] = (function(impl) {
+                return function(prevProps, prevState) {
+                    return impl(this)(prevProps)(prevState.state)();
+                }
+            })(ss[s]);
+          }
           else {
             result[s] = (function(impl) {
                 return function() {
diff --git a/src/React.purs b/src/React.purs
index 6f4bd5c..967201e 100644
--- a/src/React.purs
+++ b/src/React.purs
@@ -167,6 +167,7 @@ type UISpec props state eff =
              ) Unit
   , componentWillReceiveProps
       :: UIRef ->
+         props ->
          Eff ( props :: ReactProps props
              , state :: ReactState ReadWrite state
              , refs :: ReactRefs ReadOnly
@@ -174,6 +175,8 @@ type UISpec props state eff =
              ) Unit
   , shouldComponentUpdate
       :: UIRef ->
+         props ->
+         state ->
          Eff ( props :: ReactProps props
              , state :: ReactState ReadWrite state
              , refs :: ReactRefs ReadOnly
@@ -181,6 +184,8 @@ type UISpec props state eff =
              ) Boolean
   , componentWillUpdate
       :: UIRef ->
+         props ->
+         state ->
          Eff ( props :: ReactProps props
              , state :: ReactState ReadWrite state
              , refs :: ReactRefs ReadOnly
@@ -188,6 +193,8 @@ type UISpec props state eff =
              ) Unit
   , componentDidUpdate
       :: UIRef ->
+         props ->
+         state ->
          Eff ( props :: ReactProps props
              , state :: ReactState ReadOnly state
              , refs :: ReactRefs ReadOnly
@@ -210,10 +217,10 @@ spec st render =
   , getInitialState:           \_ -> pure st
   , componentWillMount:        \_ -> return unit
   , componentDidMount:         \_ -> return unit
-  , componentWillReceiveProps: \_ -> return unit
-  , shouldComponentUpdate:     \_ -> return true
-  , componentWillUpdate:       \_ -> return unit
-  , componentDidUpdate:        \_ -> return unit
+  , componentWillReceiveProps: \_ _ -> return unit
+  , shouldComponentUpdate:     \_ _ _ -> return true
+  , componentWillUpdate:       \_ _ _ -> return unit
+  , componentDidUpdate:        \_ _ _ -> return unit
   , componentWillUnmount:      \_ -> return unit
   }