More log4j security updates

Change-Id: I6917513bda02b4b01f5c87f7d52f49eeb9a1b749
diff --git a/core/Changes b/core/Changes
index 6bf10e1..d8ee6e6 100644
--- a/core/Changes
+++ b/core/Changes
@@ -6,6 +6,8 @@
 
 2021-12-10
  - [security] Updated log4j libs due to CVE-2021-44228.
+2022-01-03
+ - [security] More log4j security updates
 
 
 # version 0.64
diff --git a/core/pom.xml b/core/pom.xml
index 55dbf87..f236378 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -13,7 +13,7 @@
 		<jetty.version>9.4.44.v20210927</jetty.version>
 		<hibernate.version>5.6.1.Final</hibernate.version>
 		<flyway.version>8.0.5</flyway.version>
-		<log4j.version>[2.16.0,)</log4j.version>
+		<log4j.version>[2.17.1,)</log4j.version>
 		<krill.version>[0.60.2,)</krill.version>
 		<koral.version>[0.38.1,)</koral.version>
 	</properties>