diff --git a/src/ns_turn_defs.h b/src/ns_turn_defs.h
index 236e671c2..7d6bbac13 100644
--- a/src/ns_turn_defs.h
+++ b/src/ns_turn_defs.h
@@ -31,7 +31,7 @@
 #ifndef __IOADEFS__
 #define __IOADEFS__
 
-#define TURN_SERVER_VERSION "wireapp/4.6.2h"
+#define TURN_SERVER_VERSION "wireapp/4.6.2j"
 #define TURN_SERVER_VERSION_NAME "Gorst"
 #ifndef TURN_SERVER_BUILD_INFO
 #define TURN_SERVER_BUILD_INFO ""
diff --git a/src/server/ns_turn_ratelimit.c b/src/server/ns_turn_ratelimit.c
index 825a998bd..98647cf0d 100644
--- a/src/server/ns_turn_ratelimit.c
+++ b/src/server/ns_turn_ratelimit.c
@@ -86,7 +86,12 @@ int ratelimit_is_address_limited(ioa_addr *address, int max_requests, int window
   *address_new = *address;
   addr_set_port(address_new, 0);
 
+  /* Set global lock for `ur_addr_map_get` */
+  TURN_MUTEX_LOCK(&rate_limit_main_mutex);
   if (ur_addr_map_get(rate_limit_map, address_new, &ratelimit_ptr)) {
+    /* Unlock global lock from `ur_addr_map_get` */
+    TURN_MUTEX_UNLOCK(&rate_limit_main_mutex);
+
     free(address_new);
     ratelimit_entry *rateLimitEntry = (ratelimit_entry *)(void *)(ur_map_value_type)ratelimit_ptr;
     TURN_MUTEX_LOCK(&(rateLimitEntry->mutex));
@@ -105,6 +110,9 @@ int ratelimit_is_address_limited(ioa_addr *address, int max_requests, int window
       TURN_MUTEX_UNLOCK(&(rateLimitEntry->mutex));
       return 0;
     } else {
+      /* Unlock global lock from `ur_addr_map_get` */
+      TURN_MUTEX_UNLOCK(&rate_limit_main_mutex);
+
       /* Request is outside of defined window and count, request is ratelimited */
       if (rateLimitEntry->request_count < UINT32_MAX)
         rateLimitEntry->request_count++;