diff --git a/bson/constants/constants.factor b/bson/constants/constants.factor
index be9f9466b5..0da3cc0bb5 100644
--- a/bson/constants/constants.factor
+++ b/bson/constants/constants.factor
@@ -1,4 +1,4 @@
-USING: accessors kernel uuid ;
+USING: accessors kernel math parser sequences strings uuid ;
 
 IN: bson.constants
 
@@ -11,6 +11,12 @@ TUPLE: oid { a initial: 0 } { b initial: 0 } ;
 
 TUPLE: objref ns objid ;
 
+TUPLE: mdbregexp { regexp string } { options string } ;
+
+: <mdbregexp> ( string -- mdbregexp )
+   [ mdbregexp new ] dip >>regexp ;
+
+
 CONSTANT: MDB_OID_FIELD "_id"
 CONSTANT: MDB_INTERNAL_FIELD "_mdb_"
 
diff --git a/bson/reader/reader.factor b/bson/reader/reader.factor
index ca2d5a5bb3..f39d4a21d6 100644
--- a/bson/reader/reader.factor
+++ b/bson/reader/reader.factor
@@ -26,6 +26,7 @@ PREDICATE: bson-string  < integer T_String = ;
 PREDICATE: bson-object  < integer T_Object = ;
 PREDICATE: bson-array   < integer T_Array = ;
 PREDICATE: bson-binary  < integer T_Binary = ;
+PREDICATE: bson-regexp  < integer T_Regexp = ;
 PREDICATE: bson-binary-bytes < integer T_Binary_Bytes = ;
 PREDICATE: bson-binary-function < integer T_Binary_Function = ;
 PREDICATE: bson-binary-uuid < integer T_Binary_UUID = ;
@@ -165,17 +166,21 @@ M: bson-double element-data-read ( type -- double )
     read-double ;
 
 M: bson-boolean element-data-read ( type -- boolean )
-    drop
-    read-byte t = ;
+   drop
+   read-byte t = ;
 
 M: bson-date element-data-read ( type -- timestamp )
-    drop
-    read-longlong millis>timestamp ;
+   drop
+   read-longlong millis>timestamp ;
 
 M: bson-binary element-data-read ( type -- binary )
-    drop
-    read-int32 read-byte element-binary-read ;
+   drop
+   read-int32 read-byte element-binary-read ;
 
+M: bson-regexp element-data-read ( type -- mdbregexp )
+   drop mdbregexp new
+   read-cstring >>regexp read-cstring >>options ;
+ 
 M: bson-null element-data-read ( type -- bf  )
     drop
     f ;
diff --git a/bson/writer/writer.factor b/bson/writer/writer.factor
index 299b6faee7..086ff2af7f 100644
--- a/bson/writer/writer.factor
+++ b/bson/writer/writer.factor
@@ -59,6 +59,7 @@ M: string bson-type? ( string -- type ) drop T_String ;
 M: integer bson-type? ( integer -- type ) drop T_Integer ; 
 M: assoc bson-type? ( assoc -- type ) drop T_Object ;
 M: timestamp bson-type? ( timestamp -- type ) drop T_Date ;
+M: mdbregexp bson-type? ( regexp -- type ) drop T_Regexp ;
 
 M: oid bson-type? ( word -- type ) drop T_OID ;
 M: objid bson-type? ( objid -- type ) drop T_Binary ;
@@ -122,12 +123,15 @@ M: objref bson-write ( objref -- )
     [ length write-int32 ] keep
     T_Binary_Custom write-byte
     write ;
+
+M: mdbregexp bson-write ( regexp -- )
+   [ regexp>> utf8 encode write-cstring ]
+   [ options>> utf8 encode write-cstring ] bi ; 
     
 M: sequence bson-write ( array -- )
     '[ _ [ [ write-type ] dip number>string
            write-cstring bson-write ] each-index
-       write-eoo
-    ] with-length-prefix ;
+       write-eoo ] with-length-prefix ;
 
 : write-oid ( assoc -- )
     [ MDB_OID_FIELD ] dip at*
diff --git a/mongodb/driver/driver.factor b/mongodb/driver/driver.factor
index 53dd4ee427..2015ff8ecf 100644
--- a/mongodb/driver/driver.factor
+++ b/mongodb/driver/driver.factor
@@ -1,6 +1,6 @@
 USING: accessors assocs fry io.sockets kernel math mongodb.msg formatting linked-assocs destructors continuations
 mongodb.operations namespaces sequences splitting math.parser io.encodings.binary combinators io.streams.duplex
-arrays io memoize constructors sets strings uuid bson.writer ;
+arrays io memoize constructors sets strings uuid bson.writer bson.constants parser ;
 
 IN: mongodb.driver
 
@@ -38,8 +38,13 @@ SYMBOL: mdb-socket-stream
 : check-ok ( result -- ? )
      [ "ok" ] dip key? ; inline 
 
+: >mdbregexp ( value -- regexp )
+   first <mdbregexp> ;
+
 PRIVATE>
 
+: r/ \ / [ >mdbregexp ]  parse-literal ; parsing 
+
 SYMBOL: mdb-instance
 
 : mdb ( -- mdb )