diff --git a/apps/mysql/5.5.62/docker-compose.yml b/apps/mysql/5.5.62/docker-compose.yml
index 5df48d7c..e7b66d8d 100644
--- a/apps/mysql/5.5.62/docker-compose.yml
+++ b/apps/mysql/5.5.62/docker-compose.yml
@@ -19,8 +19,8 @@ services:
       - /etc/localtime:/etc/localtime:ro
     command:
       --lower-case-table-names=1
-      --character-set-server=utf8
-      --collation-server=utf8_general_ci
+      --character-set-server=utf8mb4
+      --collation-server=utf8mb4_general_ci
     labels:
       createdBy: "Apps"
 networks:
diff --git a/apps/mysql/5.6.51/conf/my.cnf b/apps/mysql/5.6.51/conf/my.cnf
index 573c347c..94804f84 100644
--- a/apps/mysql/5.6.51/conf/my.cnf
+++ b/apps/mysql/5.6.51/conf/my.cnf
@@ -29,5 +29,43 @@
 # * IMPORTANT: Additional settings that can override those from this file!
 #   The files must end with '.cnf', otherwise they'll be ignored.
 #
+
+[mysqld]
+#
+# Remove leading # and set to the amount of RAM for the most important data
+# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
+# innodb_buffer_pool_size = 128M
+#
+# Remove leading # to turn on a very important data integrity option: logging
+# changes to the binary log between backups.
+# log_bin
+#
+# Remove leading # to set options mainly useful for reporting servers.
+# The server defaults are faster for transactions and fast SELECTs.
+# Adjust sizes as needed, experiment to find the optimal values.
+# join_buffer_size = 128M
+# sort_buffer_size = 2M
+# read_rnd_buffer_size = 2M
+skip-host-cache
+skip-name-resolve
+datadir=/var/lib/mysql
+socket=/var/run/mysqld/mysqld.sock
+secure-file-priv=/var/lib/mysql-files
+user=mysql
+
+# Disabling symbolic-links is recommended to prevent assorted security risks
+symbolic-links=0
+
+#log-error=/var/log/mysqld.log
+pid-file=/var/run/mysqld/mysqld.pid
+
+max_allowed_packet=64M
+character_set_server=utf8
+lower_case_table_names=1
+group_concat_max_len=1024000
+
+[client]
+socket=/var/run/mysqld/mysqld.sock
+
 !includedir /etc/mysql/conf.d/
-!includedir /etc/mysql/mysql.conf.d/
+!includedir /etc/mysql/mysql.conf.d/
\ No newline at end of file
diff --git a/apps/mysql/5.6.51/docker-compose.yml b/apps/mysql/5.6.51/docker-compose.yml
index d0934dd0..841e739a 100644
--- a/apps/mysql/5.6.51/docker-compose.yml
+++ b/apps/mysql/5.6.51/docker-compose.yml
@@ -20,8 +20,8 @@ services:
     command:
       --explicit-defaults-for-timestamp=1
       --lower-case-table-names=1
-      --character-set-server=utf8
-      --collation-server=utf8_general_ci
+      --character-set-server=utf8mb4
+      --collation-server=utf8mb4_general_ci
     labels:
       createdBy: "Apps"
 networks: