diff --git a/ManufacturingSoftwareGuidelines.pdf b/ManufacturingSoftwareGuidelines.pdf
index d4c5e2f..fd3fc04 100644
Binary files a/ManufacturingSoftwareGuidelines.pdf and b/ManufacturingSoftwareGuidelines.pdf differ
diff --git a/README.md b/README.md
index 4979426..769af70 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 
 >Licensed under the terms of the [Mozilla Public License 2.0](LICENSE)<br/>
 >[Project Website](http://www.ordisoftware.com/projects/guidelines)<br/>
+>[Twitter](https://twitter.com/ordisoftware)<br/>
 
 This document presents some rules to create software.
 
@@ -9,19 +10,19 @@ This document presents some rules to create software.
 
 ## Table of content
 
-* License
+* License and copyright
 * Foreword
 * Methodology
   * Agility
   * Dichotomy
-  * Documentation
   * Modeling
+  * Documentation
   * Ecosystem
+* Tools
 * Programming
-  * Tools
   * Paths
   * Naming
-  * Comments
+  * Commenting
   * Formatting
 * UI design
   * Console
@@ -34,3 +35,28 @@ This document presents some rules to create software.
   * ZenHub boarding
 * Appendices
 * Bibliography
+
+## Changelog
+
+#### 2020.07.03 - Version 0.5
+
+-	Upgrade from Word 2010 to Word 2019
+-	Update tools and bibliography.
+-	Some writing corrections.
+
+#### 2019.09.03 - Version 0.4
+
+-	Update tools and bibliography.
+
+#### 2019.01.14 - Version 0.3
+
+-	Add agility and articles about interface and singleton keywords.
+
+#### 2018.04.08 - Version 0.2
+
+-	The first word of « manufacturing », « building » and « crafting » was chosen for the title of this document because the second usually means « generating the machine code » during the production process and the latter is only recently used in our business and this word designates exactly what is our job which is to create software with our hands and with our minds, and we will always do that by this way.
+-	Since in French « développement » and « programmation » are synonyms but in English « development » means « engineering » the title of this document has been revised.
+
+#### 2018.04.05 - Version 0.1
+
+-	Initial draft.
\ No newline at end of file
diff --git a/Source/ManufacturingSoftwareGuidelines.docx b/Source/ManufacturingSoftwareGuidelines.docx
index f339d4a..cd3787f 100644
Binary files a/Source/ManufacturingSoftwareGuidelines.docx and b/Source/ManufacturingSoftwareGuidelines.docx differ