Updated Books (markdown)
diff --git a/Books.md b/Books.md
index 9ffba97..446b3e7 100644
--- a/Books.md
+++ b/Books.md
@@ -181,14 +181,14 @@
* ISBN: --
* Reference: [http://usegolang.com](http://usegolang.com)
-## Pre-order
-
* **Go Systems Programming**
* Author: Mihalis Tsoukalos
- * Publication Date: October 2017
+ * Publication Date: September 2017
* ISBN: 9781787125643
* Reference: https://www.packtpub.com/networking-and-servers/go-systems-programming
+## Pre-order
+
* **Black Hat Go**
* Author: Tom Steele, Chris Patten, and Dan Kottmann
* Publication Date: March 2018