diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 Usage
 -----
 
-Cgrep 6.5.0 Usage: cgrep [OPTION] [PATTERN] files...
+Cgrep 6.5.1 Usage: cgrep [OPTION] [PATTERN] files...
 
 cgrep [OPTIONS] [ITEM]
 
@@ -50,7 +50,6 @@
        --lang=ITEM            specify languages. ie: Cpp, +Haskell, -Makefile
        --lang-maps            lists the language mappings
        --force-language=ITEM  force the language
-    -j --jobs=INT             number of jobs
        --multiline=INT        enable multi-line matching
     -r --recursive            Enable recursive search (don't follow symlinks)
     -R --deference-recursive  Recursive, follow symlinks
@@ -64,10 +63,18 @@
        --json                 format output as json object
        --xml                  format output as xml document
   
+Concurrency:
+
+    -j --jobs=INT             Number of jobs
+       --cores=INT            Set number of physical processor used
+       --chunk=INT            Set per-job chunk length
+    -a --asynch               Process chunk of files asynchronously
+
 Miscellaneous:
 
     -d --debug=INT            debug level: 1, 2 or 3
     -n --no-turbo             disable turbo mode
     -? --help                 Display help message
     -V --version              Print version information
+
 
diff --git a/cgrep.cabal b/cgrep.cabal
--- a/cgrep.cabal
+++ b/cgrep.cabal
@@ -1,6 +1,6 @@
 Name:                cgrep
 Description:         Cgrep: a context-aware grep for source codes
-Version:             6.5.0
+Version:             6.5.1
 Synopsis:            Command line tool
 Homepage:            http://awgn.github.io/cgrep/
 License:             GPL-2
diff --git a/src/CmdOptions.hs b/src/CmdOptions.hs
--- a/src/CmdOptions.hs
+++ b/src/CmdOptions.hs
@@ -63,7 +63,7 @@
 #endif
           ,     json = False                &= help "Format output as json object" &= explicit &= name "json"
           ,     xml = False                 &= help "Format output as xml document" &= explicit &= name "xml"
-          ,     jobs   = 1                  &= groupname "\nParallel" &= help "Number of jobs"
+          ,     jobs   = 1                  &= groupname "\nConcurrency" &= help "Number of jobs"
           ,     cores  = 0                  &= help "Set number of physical processor used"
           ,     chunk  = 16                 &= help "Set per-job chunk length"
           ,     asynch = False              &= help "Process chunk of files asynchronously"
diff --git a/src/Config.hs b/src/Config.hs
--- a/src/Config.hs
+++ b/src/Config.hs
@@ -31,7 +31,7 @@
 cgreprc = "cgreprc"
 
 version :: String
-version = "6.5.0"
+version = "6.5.1"
 
 
 data Config = Config