diff -Nru tomcat9-9.0.31/debian/changelog tomcat9-9.0.31/debian/changelog
--- tomcat9-9.0.31/debian/changelog	2020-10-20 15:27:39.000000000 +0300
+++ tomcat9-9.0.31/debian/changelog	2022-03-29 09:54:04.000000000 +0300
@@ -1,3 +1,10 @@
+tomcat9 (9.0.31-1ubuntu0.2) UNRELEASED; urgency=medium
+
+  * Grant write access on /var/log/tomcat9 to the adm group (LP: #1861881)
+  * Fix logrotated not able to truncate cataline.out (LP: #1964881)
+
+ -- Evren Yurtesen <eyurtese@abo.fi>  Tue, 29 Mar 2022 09:54:04 +0300
+
 tomcat9 (9.0.31-1ubuntu0.1) focal-security; urgency=medium
 
   * SECURITY UPDATE: HTTP/2 Denial of Service
diff -Nru tomcat9-9.0.31/debian/logrotate.template tomcat9-9.0.31/debian/logrotate.template
--- tomcat9-9.0.31/debian/logrotate.template	2020-02-24 20:51:33.000000000 +0200
+++ tomcat9-9.0.31/debian/logrotate.template	2022-03-29 09:51:20.000000000 +0300
@@ -5,5 +5,6 @@
   compress
   delaycompress
   missingok
-  create 640 tomcat adm
+  create 640 syslog adm
+  su syslog adm
 }
diff -Nru tomcat9-9.0.31/debian/rsyslog/tomcat9.conf tomcat9-9.0.31/debian/rsyslog/tomcat9.conf
--- tomcat9-9.0.31/debian/rsyslog/tomcat9.conf	2020-02-24 20:51:33.000000000 +0200
+++ tomcat9-9.0.31/debian/rsyslog/tomcat9.conf	2022-03-29 09:51:01.000000000 +0300
@@ -2,6 +2,6 @@
 $template TomcatFormat,"[%timegenerated:::date-year%-%timegenerated:::date-month%-%timegenerated:::date-day% %timegenerated:::date-hour%:%timegenerated:::date-minute%:%timegenerated:::date-second%] [%syslogseverity-text%]%msg%\n"
 
 :programname, startswith, "tomcat9" {
-  /var/log/tomcat9/catalina.out;TomcatFormat
+  action(type="omfile" file="/var/log/tomcat9/catalina.out" Template="TomcatFormat" fileOwner="syslog" fileCreateMode="0640")
   stop
 }
diff -Nru tomcat9-9.0.31/debian/tomcat9.postinst tomcat9-9.0.31/debian/tomcat9.postinst
--- tomcat9-9.0.31/debian/tomcat9.postinst	2020-02-24 20:51:33.000000000 +0200
+++ tomcat9-9.0.31/debian/tomcat9.postinst	2022-03-29 09:49:10.000000000 +0300
@@ -64,7 +64,7 @@
 
 	# Grant read/write access to tomcat to the log and cache directories
 	chown -Rh $TOMCAT_USER:adm /var/log/tomcat9/
-	chmod 2750 /var/log/tomcat9/
+	chmod 2770 /var/log/tomcat9/
 	chown -Rh $TOMCAT_USER:$TOMCAT_GROUP /var/cache/tomcat9/
 	chmod 750 /var/cache/tomcat9/
     ;;
diff -Nru tomcat9-9.0.31/debian/tomcat9.tmpfile tomcat9-9.0.31/debian/tomcat9.tmpfile
--- tomcat9-9.0.31/debian/tomcat9.tmpfile	2020-02-24 20:51:33.000000000 +0200
+++ tomcat9-9.0.31/debian/tomcat9.tmpfile	2022-03-29 09:48:44.000000000 +0300
@@ -3,4 +3,4 @@
 # See tmpfiles.d(5) for details
 
 # Type Path        Mode UID    GID  Age Argument
-d /var/log/tomcat9 2750 tomcat adm  -
+d /var/log/tomcat9 2770 tomcat adm  -