Index: openacs-4/packages/chat/chat.info
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/chat/chat.info,v
diff -u -N -r1.22.2.7 -r1.22.2.8
--- openacs-4/packages/chat/chat.info	7 Mar 2019 14:00:04 -0000	1.22.2.7
+++ openacs-4/packages/chat/chat.info	7 Mar 2019 14:11:09 -0000	1.22.2.8
@@ -27,6 +27,7 @@
         <requires url="xowiki" version="5.10.0d24"/>
 
         <callbacks>
+          <callback type="after-upgrade"  proc="chat::apm::after_upgrade"/>
         </callbacks>
         <parameters>
             <parameter scope="instance" datatype="string"  min_n_values="1"  max_n_values="1"  name="UserColors"  default="#006400 #0000ff #b8860b #bdb76b #8b0000" description="A list of colors to assign to user names in the chat"/>
Index: openacs-4/packages/chat/tcl/apm-callback-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/chat/tcl/Attic/apm-callback-procs.tcl,v
diff -u -N -r1.1.2.1 -r1.1.2.2
--- openacs-4/packages/chat/tcl/apm-callback-procs.tcl	7 Mar 2019 14:00:04 -0000	1.1.2.1
+++ openacs-4/packages/chat/tcl/apm-callback-procs.tcl	7 Mar 2019 14:11:09 -0000	1.1.2.2
@@ -6,9 +6,9 @@
 
 namespace eval chat::apm {}
 
-ad_proc -private chat::apm::upgrade {
-    -from_version_name
-    -to_version_name
+ad_proc -private chat::apm::after_upgrade {
+    -from_version_name:required
+    -to_version_name:required
 } {
     Upgrade logics for the chat package
 } {