diff --git a/libimagstore/src/hook.rs b/libimagstore/src/hook.rs
index f8738f82..3028cc98 100644
--- a/libimagstore/src/hook.rs
+++ b/libimagstore/src/hook.rs
@@ -1,64 +1,75 @@
-use storeid::StoreId;
-use store::FileLockEntry;
-
 use self::error::HookError;
 
-pub type HookResult = Result<(), HookError>;
-
-pub trait Hook : Eq + PartialEq + Debug + Display {
-    fn dependencies(&self) -> Vec<Box<Hook>>;
-}
-
-pub trait StoreIdHook : Hook {
-    fn execute(&self, &StoreId) -> HookResult;
-}
-
-pub trait FileLockHook : Hook {
-    fn execute(&self, &StoreId, &FileLockEntry) -> HookResult;
-}
+pub type HookResult<T> = Result<T, HookError>;
 
 pub mod read {
-    use super::FileLockHook;
-    use super::StoreIdHook;
+    use storeid::StoreId;
+    use store::FileLockEntry;
+    use super::HookResult;
 
-    pub trait PreReadHook : StoreIdHook {
+    pub trait PreReadHook {
+        fn pre_read(&self, &StoreId) -> HookResult<()>;
     }
 
-    pub trait PostReadHook : FileLockHook {
+    pub trait PostReadHook {
+        fn post_read<'a>(&self, FileLockEntry<'a>) -> HookResult<FileLockEntry<'a>>;
     }
 
 }
 
 pub mod create {
-    use super::FileLockHook;
-    use super::StoreIdHook;
+    use storeid::StoreId;
+    use store::FileLockEntry;
+    use super::HookResult;
 
-    pub trait PreCreateHook : StoreIdHook {
+    pub trait PreCreateHook {
+        fn pre_create(&self, &StoreId) -> HookResult<()>;
     }
 
-    pub trait PostCreateHook : FileLockHook {
+    pub trait PostCreateHook {
+        fn post_create<'a>(&self, FileLockEntry<'a>) -> HookResult<FileLockEntry<'a>>;
     }
 
 }
 
 pub mod retrieve {
-    use super::FileLockHook;
-    use super::StoreIdHook;
+    use storeid::StoreId;
+    use store::FileLockEntry;
+    use super::HookResult;
 
-    pub trait PreRetrieveHook : StoreIdHook {
+    pub trait PreRetrieveHook {
+        fn pre_retrieve(&self, &StoreId) -> HookResult<()>;
     }
 
-    pub trait PostRetrieveHook : FileLockHook {
+    pub trait PostRetrieveHook {
+        fn post_retrieve<'a>(&self, FileLockEntry<'a>) -> HookResult<FileLockEntry<'a>>;
+    }
+}
+
+pub mod update {
+    use store::FileLockEntry;
+    use super::HookResult;
+
+    pub trait PreUpdateHook {
+        fn pre_update(&self, &FileLockEntry) -> HookResult<()>;
+    }
+
+    pub trait PostUpdateHook {
+        fn post_update(&self, &FileLockEntry) -> HookResult<()>;
     }
 }
 
 pub mod delete {
-    use super::StoreIdHook;
+    use storeid::StoreId;
+    use store::FileLockEntry;
+    use super::HookResult;
 
-    pub trait PreDeleteHook : StoreIdHook {
+    pub trait PreDeleteHook {
+        fn pre_delete(&self, &StoreId) -> HookResult<()>;
     }
 
-    pub trait PostDeleteHook : StoreIdHook {
+    pub trait PostDeleteHook {
+        fn post_delete(&self, &StoreId) -> HookResult<()>;
     }
 }
 
diff --git a/libimagstore/src/store.rs b/libimagstore/src/store.rs
index dfb3efb2..d6c5a9a4 100644
--- a/libimagstore/src/store.rs
+++ b/libimagstore/src/store.rs
@@ -21,7 +21,6 @@ use error::{StoreError, StoreErrorKind};
 use storeid::{StoreId, StoreIdIterator};
 use lazyfile::LazyFile;
 
-use hook::Hook;
 use hook::read::{PreReadHook, PostReadHook};
 use hook::create::{PreCreateHook, PostCreateHook};
 use hook::retrieve::{PreRetrieveHook, PostRetrieveHook};
@@ -109,6 +108,8 @@ pub struct Store {
     post_create_hooks   : Arc<Mutex<Vec<Box<PostCreateHook>>>>,
     pre_retrieve_hooks  : Arc<Mutex<Vec<Box<PreRetrieveHook>>>>,
     post_retrieve_hooks : Arc<Mutex<Vec<Box<PostRetrieveHook>>>>,
+    pre_update_hooks    : Arc<Mutex<Vec<Box<PreUpdateHook>>>>,
+    post_update_hooks   : Arc<Mutex<Vec<Box<PostUpdateHook>>>>,
     pre_delete_hooks    : Arc<Mutex<Vec<Box<PreDeleteHook>>>>,
     post_delete_hooks   : Arc<Mutex<Vec<Box<PostDeleteHook>>>>,
 
@@ -153,6 +154,8 @@ impl Store {
             post_create_hooks   : Arc::new(Mutex::new(vec![])),
             pre_retrieve_hooks  : Arc::new(Mutex::new(vec![])),
             post_retrieve_hooks : Arc::new(Mutex::new(vec![])),
+            pre_update_hooks    : Arc::new(Mutex::new(vec![])),
+            post_update_hooks   : Arc::new(Mutex::new(vec![])),
             pre_delete_hooks    : Arc::new(Mutex::new(vec![])),
             post_delete_hooks   : Arc::new(Mutex::new(vec![])),
             entries: Arc::new(RwLock::new(HashMap::new())),
@@ -336,6 +339,25 @@ impl Store {
             .map(|mut guard| guard.deref_mut().push(h))
     }
 
+    pub fn register_pre_update_hook(&self, h: Box<PreUpdateHook>) -> Result<()> {
+        self.pre_update_hooks
+            .deref()
+            .lock()
+            .map_err(|_| StoreError::new(StoreErrorKind::HookRegisterError, None))
+            // TODO: cause: Some(Box::new(e))
+            .map(|mut guard| guard.deref_mut().push(h))
+    }
+
+    pub fn register_post_update_hook(&self, h: Box<PostUpdateHook>) -> Result<()> {
+        self.post_update_hooks
+            .deref()
+            .lock()
+            .map_err(|_| StoreError::new(StoreErrorKind::HookRegisterError, None))
+            // TODO: cause: Some(Box::new(e))
+            .map(|mut guard| guard.deref_mut().push(h))
+    }
+
+
     pub fn register_pre_delete_hook(&self, h: Box<PreDeleteHook>) -> Result<()> {
         self.pre_delete_hooks
             .deref()