diff --git a/Dockerfile b/Dockerfile
index 4f2105e..185acc1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,7 +10,7 @@ ENV TOMCAT_MAJOR=9 \
 ##shib-idp \
     VERSION=4.1.4 \
 ##TIER \
-    TIERVERSION=20211214 \
+    TIERVERSION=20211220 \
 #################### \
 #### OTHER VARS #### \
 #################### \
@@ -160,12 +160,12 @@ ADD container_files/idp/idp.xml /usr/local/tomcat/conf/Catalina/idp.xml
 ADD container_files/tomcat/server.xml /usr/local/tomcat/conf/server.xml
 
 #use log4j for tomcat logging
-#ADD https://repo1.maven.org/maven2/org/apache/logging/log4j/log4j-core/2.15.0/log4j-core-2.15.0.jar /usr/local/tomcat/bin/
-COPY container_files/tomcat/log4j-core-2.16.0.jar /usr/local/tomcat/bin/
-#ADD https://repo1.maven.org/maven2/org/apache/logging/log4j/log4j-api/2.15.0/log4j-api-2.15.0.jar /usr/local/tomcat/bin/
-COPY container_files/tomcat/log4j-api-2.16.0.jar /usr/local/tomcat/bin/
-#ADD https://repo1.maven.org/maven2/org/apache/logging/log4j/log4j-jul/2.15.0/log4j-jul-2.15.0.jar /usr/local/tomcat/bin/
-COPY container_files/tomcat/log4j-jul-2.16.0.jar /usr/local/tomcat/bin/
+#ADD https://repo1.maven.org/maven2/org/apache/logging/log4j/log4j-core/2.17.0/log4j-core-2.17.0.jar /usr/local/tomcat/bin/
+COPY container_files/tomcat/log4j-core-2.17.0.jar /usr/local/tomcat/bin/
+#ADD https://repo1.maven.org/maven2/org/apache/logging/log4j/log4j-api/2.17.0/log4j-api-2.17.0.jar /usr/local/tomcat/bin/
+COPY container_files/tomcat/log4j-api-2.17.0.jar /usr/local/tomcat/bin/
+#ADD https://repo1.maven.org/maven2/org/apache/logging/log4j/log4j-jul/2.17.0/log4j-jul-2.17.0.jar /usr/local/tomcat/bin/
+COPY container_files/tomcat/log4j-jul-2.17.0.jar /usr/local/tomcat/bin/
 
 RUN cd /usr/local/tomcat/; \
     chmod +r bin/log4j-*.jar;
diff --git a/container_files/tomcat/log4j-api-2.16.0.jar b/container_files/tomcat/log4j-api-2.16.0.jar
deleted file mode 100644
index 2fea718..0000000
Binary files a/container_files/tomcat/log4j-api-2.16.0.jar and /dev/null differ
diff --git a/container_files/tomcat/log4j-api-2.15.0.jar b/container_files/tomcat/log4j-api-2.17.0.jar
similarity index 80%
rename from container_files/tomcat/log4j-api-2.15.0.jar
rename to container_files/tomcat/log4j-api-2.17.0.jar
index a662571..e39dab0 100644
Binary files a/container_files/tomcat/log4j-api-2.15.0.jar and b/container_files/tomcat/log4j-api-2.17.0.jar differ
diff --git a/container_files/tomcat/log4j-core-2.16.0.jar b/container_files/tomcat/log4j-core-2.16.0.jar
deleted file mode 100644
index 6a2365b..0000000
Binary files a/container_files/tomcat/log4j-core-2.16.0.jar and /dev/null differ
diff --git a/container_files/tomcat/log4j-core-2.15.0.jar b/container_files/tomcat/log4j-core-2.17.0.jar
similarity index 82%
rename from container_files/tomcat/log4j-core-2.15.0.jar
rename to container_files/tomcat/log4j-core-2.17.0.jar
index f7e14b8..b853057 100644
Binary files a/container_files/tomcat/log4j-core-2.15.0.jar and b/container_files/tomcat/log4j-core-2.17.0.jar differ
diff --git a/container_files/tomcat/log4j-jul-2.16.0.jar b/container_files/tomcat/log4j-jul-2.16.0.jar
deleted file mode 100644
index 7ff6bac..0000000
Binary files a/container_files/tomcat/log4j-jul-2.16.0.jar and /dev/null differ
diff --git a/container_files/tomcat/log4j-jul-2.15.0.jar b/container_files/tomcat/log4j-jul-2.17.0.jar
similarity index 76%
rename from container_files/tomcat/log4j-jul-2.15.0.jar
rename to container_files/tomcat/log4j-jul-2.17.0.jar
index 99ef096..44c8ea2 100644
Binary files a/container_files/tomcat/log4j-jul-2.15.0.jar and b/container_files/tomcat/log4j-jul-2.17.0.jar differ