diff --git a/src/pot3d.f b/src/pot3d.f
index b065715..2732174 100644
--- a/src/pot3d.f
+++ b/src/pot3d.f
@@ -44,8 +44,8 @@ module ident
 c-----------------------------------------------------------------------
 c
       character(*), parameter :: idcode='POT3D'
-      character(*), parameter :: vers  ='r2.24'
-      character(*), parameter :: update='01/28/2021'
+      character(*), parameter :: vers  ='r3.0.0'
+      character(*), parameter :: update='02/09/2021'
 c
       end module
 c#######################################################################
@@ -8541,4 +8541,8 @@ subroutine interp (x,n,xv,i,alpha)
 c       - Small bug fix for default output file names and 
 c         format option fmt.
 c
+c ### Version 3.0.0, 02/10/2021, file pot3d.f, modified by RC:
+c
+c       - Changed version number scheme to semantic versioning.
+c
 c#######################################################################