1 files changed, 2 insertions, 7 deletions

diff --git a/documentation/dev-manual/dev-manual.xml b/documentation/dev-manual/dev-manual.xml
index 2d112fb566..ffeb2150e9 100644..100755
--- a/documentation/dev-manual/dev-manual.xml
+++ b/documentation/dev-manual/dev-manual.xml
@@ -33,7 +33,7 @@
         <revhistory>
             <revision>
                 <revnumber>1.1</revnumber>
-                <date>6 October 2011</date>
+                <date>October 2011</date>
                 <revremark>The initial document released with the Yocto Project 1.1 Release.</revremark>
             </revision>
             <revision>
@@ -57,11 +57,6 @@
                 <revremark>Released with the Yocto Project 1.5 Release.</revremark>
             </revision>
             <revision>
-                <revnumber>1.5.1</revnumber>
-                <date>January 2014</date>
-                <revremark>Released with the Yocto Project 1.5.1 Release.</revremark>
-            </revision>
-            <revision>
                 <revnumber>1.6</revnumber>
                 <date>April 2014</date>
                 <revremark>Released with the Yocto Project 1.6 Release.</revremark>
@@ -118,7 +113,7 @@
             </revision>
             <revision>
                 <revnumber>3.0</revnumber>
-                <date>October</date>
+                <date>October 2019</date>
                 <revremark>Released with the Yocto Project 3.0 Release.</revremark>
             </revision>
             <revision>