diff --git a/hsrc_lib/Database/LMDB/Raw.hsc b/hsrc_lib/Database/LMDB/Raw.hsc
--- a/hsrc_lib/Database/LMDB/Raw.hsc
+++ b/hsrc_lib/Database/LMDB/Raw.hsc
@@ -32,7 +32,6 @@
 --
 -- * functions directly using file handles 
 -- * user-defined relocation functions 
--- * alloc-avoiding renew and reset operations
 -- * MDB_MULTIPLE is not currently supported (todo)
 -- 
 module Database.LMDB.Raw
@@ -123,6 +122,9 @@
     , mdb_reader_list
     , mdb_reader_check
 
+    , mdb_txn_reset
+    , mdb_txn_renew
+
     -- | Utility
     , withKVPtrs
     , withKVOptPtrs
@@ -218,6 +220,9 @@
 -- foreign import ccall unsafe "lmdb.h mdb_cursor_txn" _mdb_cursor_txn' :: Ptr MDB_cursor -> IO (Ptr MDB_txn)
 -- foreign import ccall unsafe "lmdb.h mdb_cursor_dbi" _mdb_cursor_dbi' :: Ptr MDB_cursor -> IO MDB_dbi
 
+foreign import ccall unsafe "lmdb.h mdb_txn_reset" _mdb_txn_reset :: Ptr MDB_txn -> IO ()
+foreign import ccall "lmdb.h mdb_txn_renew" _mdb_txn_renew :: Ptr MDB_txn -> IO CInt
+
 foreign import ccall "lmdb.h mdb_reader_list" _mdb_reader_list :: Ptr MDB_env -> FunPtr MDB_msg_func -> Ptr () -> IO CInt
 foreign import ccall "lmdb.h mdb_reader_check" _mdb_reader_check :: Ptr MDB_env -> Ptr CInt -> IO CInt
 
@@ -346,8 +351,8 @@
 
 -- | A value stored in the database. Be cautious; committing the
 -- transaction that obtained a value should also invalidate it;
--- avoid capturing MDB_val in a lazy value. A 'safe' interface
--- similar to STRef will be provided in another module.
+-- avoid capturing MDB_val in a lazy value. A safe interface
+-- similar to STRef could be provided by another module.
 data MDB_val = MDB_val
     { mv_size :: {-# UNPACK #-} !CSize
     , mv_data :: {-# UNPACK #-} !(Ptr Word8)
@@ -915,6 +920,18 @@
 mdb_txn_abort txn = mask_ $ 
     _mdb_txn_abort (_txn_ptr txn) >> 
     _unlockTxn txn
+
+-- | Abort a read-only transaction, but don't destroy it. 
+-- Keep it available for mdb_txn_renew.
+mdb_txn_reset :: MDB_txn -> IO ()
+mdb_txn_reset txn = _mdb_txn_reset (_txn_ptr txn) 
+
+-- | Renew a read-only transaction that was previously _reset.
+mdb_txn_renew :: MDB_txn -> IO ()
+mdb_txn_renew txn =
+    _mdb_txn_renew (_txn_ptr txn) >>= \ rc ->
+    unless (0 == rc) (_throwLMDBErrNum "mdb_txn_renew" rc)
+
 
 {-
 
diff --git a/lmdb.cabal b/lmdb.cabal
--- a/lmdb.cabal
+++ b/lmdb.cabal
@@ -1,5 +1,5 @@
 Name: lmdb
-Version: 0.2.1
+Version: 0.2.2
 Synopsis: Lightning MDB bindings 
 Category: Database
 Description: