diff --git a/java-gateway/alpine/Dockerfile b/java-gateway/alpine/Dockerfile
index 2e918e422..efb05ab9a 100644
--- a/java-gateway/alpine/Dockerfile
+++ b/java-gateway/alpine/Dockerfile
@@ -82,6 +82,8 @@ EXPOSE 10052/TCP
 
 WORKDIR /var/lib/zabbix
 
+VOLUME ["/usr/sbin/zabbix_java/ext_lib"]
+
 COPY ["conf/etc/zabbix/zabbix_java_gateway_logback.xml", "/etc/zabbix/"]
 COPY ["conf/usr/sbin/zabbix_java_gateway", "/usr/sbin/"]
 COPY ["docker-entrypoint.sh", "/usr/bin/"]
diff --git a/java-gateway/alpine/README.md b/java-gateway/alpine/README.md
index 48f60c65f..975670648 100644
--- a/java-gateway/alpine/README.md
+++ b/java-gateway/alpine/README.md
@@ -72,6 +72,12 @@ This variable is used to specify timeout for outgoing connections. By default, v
 
 This variable is used to specify log level. By default, value is `info`. The variable allows next values: ``trace``, ``debug``, ``info``, ``want``, ``error``, ``all``, ``off``
 
+## Allowed volumes for the Zabbix Java Gateway container
+
+### ``/usr/sbin/zabbix_java/ext_lib``
+
+The volume allows include additional JAR files to extend allowed protocols for Zabbix Java Gateway.
+
 # The image variants
 
 The `zabbix-java-gateway` images come in many flavors, each designed for a specific use case.
diff --git a/java-gateway/alpine/conf/usr/sbin/zabbix_java_gateway b/java-gateway/alpine/conf/usr/sbin/zabbix_java_gateway
index 2da696885..e77d407f6 100755
--- a/java-gateway/alpine/conf/usr/sbin/zabbix_java_gateway
+++ b/java-gateway/alpine/conf/usr/sbin/zabbix_java_gateway
@@ -7,7 +7,7 @@ JAVA_OPTIONS="$JAVA_OPTIONS -Dlogback.configurationFile=/etc/zabbix/zabbix_java_
 cd $DAEMON
 
 CLASSPATH="$DAEMON/lib"
-for jar in `find lib bin -name "*.jar"`; do
+for jar in `find lib bin ext_lib -name "*.jar"`; do
     if [ $jar != *junit* ]; then
         CLASSPATH="$CLASSPATH:$DAEMON/$jar"
     fi
diff --git a/java-gateway/centos/Dockerfile b/java-gateway/centos/Dockerfile
index 9aae2cac9..2c09e71ce 100644
--- a/java-gateway/centos/Dockerfile
+++ b/java-gateway/centos/Dockerfile
@@ -85,6 +85,8 @@ EXPOSE 10052/TCP
 
 WORKDIR /var/lib/zabbix
 
+VOLUME ["/usr/sbin/zabbix_java/ext_lib"]
+
 COPY ["conf/etc/zabbix/zabbix_java_gateway_logback.xml", "/etc/zabbix/"]
 COPY ["conf/usr/sbin/zabbix_java_gateway", "/usr/sbin/"]
 COPY ["docker-entrypoint.sh", "/usr/bin/"]
diff --git a/java-gateway/centos/README.md b/java-gateway/centos/README.md
index 48f60c65f..975670648 100644
--- a/java-gateway/centos/README.md
+++ b/java-gateway/centos/README.md
@@ -72,6 +72,12 @@ This variable is used to specify timeout for outgoing connections. By default, v
 
 This variable is used to specify log level. By default, value is `info`. The variable allows next values: ``trace``, ``debug``, ``info``, ``want``, ``error``, ``all``, ``off``
 
+## Allowed volumes for the Zabbix Java Gateway container
+
+### ``/usr/sbin/zabbix_java/ext_lib``
+
+The volume allows include additional JAR files to extend allowed protocols for Zabbix Java Gateway.
+
 # The image variants
 
 The `zabbix-java-gateway` images come in many flavors, each designed for a specific use case.
diff --git a/java-gateway/centos/conf/usr/sbin/zabbix_java_gateway b/java-gateway/centos/conf/usr/sbin/zabbix_java_gateway
index 2da696885..e77d407f6 100755
--- a/java-gateway/centos/conf/usr/sbin/zabbix_java_gateway
+++ b/java-gateway/centos/conf/usr/sbin/zabbix_java_gateway
@@ -7,7 +7,7 @@ JAVA_OPTIONS="$JAVA_OPTIONS -Dlogback.configurationFile=/etc/zabbix/zabbix_java_
 cd $DAEMON
 
 CLASSPATH="$DAEMON/lib"
-for jar in `find lib bin -name "*.jar"`; do
+for jar in `find lib bin ext_lib -name "*.jar"`; do
     if [ $jar != *junit* ]; then
         CLASSPATH="$CLASSPATH:$DAEMON/$jar"
     fi
diff --git a/java-gateway/ubuntu/Dockerfile b/java-gateway/ubuntu/Dockerfile
index 6419e8a51..cfaa912df 100644
--- a/java-gateway/ubuntu/Dockerfile
+++ b/java-gateway/ubuntu/Dockerfile
@@ -100,6 +100,8 @@ EXPOSE 10052/TCP
 
 WORKDIR /var/lib/zabbix
 
+VOLUME ["/usr/sbin/zabbix_java/ext_lib"]
+
 COPY ["conf/etc/zabbix/zabbix_java_gateway_logback.xml", "/etc/zabbix/"]
 COPY ["conf/usr/sbin/zabbix_java_gateway", "/usr/sbin/"]
 COPY ["docker-entrypoint.sh", "/usr/bin/"]
diff --git a/java-gateway/ubuntu/README.md b/java-gateway/ubuntu/README.md
index 48f60c65f..975670648 100644
--- a/java-gateway/ubuntu/README.md
+++ b/java-gateway/ubuntu/README.md
@@ -72,6 +72,12 @@ This variable is used to specify timeout for outgoing connections. By default, v
 
 This variable is used to specify log level. By default, value is `info`. The variable allows next values: ``trace``, ``debug``, ``info``, ``want``, ``error``, ``all``, ``off``
 
+## Allowed volumes for the Zabbix Java Gateway container
+
+### ``/usr/sbin/zabbix_java/ext_lib``
+
+The volume allows include additional JAR files to extend allowed protocols for Zabbix Java Gateway.
+
 # The image variants
 
 The `zabbix-java-gateway` images come in many flavors, each designed for a specific use case.
diff --git a/java-gateway/ubuntu/conf/usr/sbin/zabbix_java_gateway b/java-gateway/ubuntu/conf/usr/sbin/zabbix_java_gateway
index 2da696885..e77d407f6 100755
--- a/java-gateway/ubuntu/conf/usr/sbin/zabbix_java_gateway
+++ b/java-gateway/ubuntu/conf/usr/sbin/zabbix_java_gateway
@@ -7,7 +7,7 @@ JAVA_OPTIONS="$JAVA_OPTIONS -Dlogback.configurationFile=/etc/zabbix/zabbix_java_
 cd $DAEMON
 
 CLASSPATH="$DAEMON/lib"
-for jar in `find lib bin -name "*.jar"`; do
+for jar in `find lib bin ext_lib -name "*.jar"`; do
     if [ $jar != *junit* ]; then
         CLASSPATH="$CLASSPATH:$DAEMON/$jar"
     fi