diff --git a/configs/samples/pjsip.conf.sample b/configs/samples/pjsip.conf.sample
index b1c1657ff7..2d93bd1276 100644
--- a/configs/samples/pjsip.conf.sample
+++ b/configs/samples/pjsip.conf.sample
@@ -1025,8 +1025,6 @@
 ;[transport]
 ;  SYNOPSIS: SIP Transport
 ;
-;async_operations=1     ; Number of simultaneous Asynchronous Operations
-                        ; (default: "1")
 ;bind=  ; IP Address and optional port to bind to for this transport (default:
         ; "")
 ; Note that for the Websocket transport the TLS configuration is configured
diff --git a/doc/UPGRADE-staging/res_pjsip_async_operations.txt b/doc/UPGRADE-staging/res_pjsip_async_operations.txt
new file mode 100644
index 0000000000..cf9f9426da
--- /dev/null
+++ b/doc/UPGRADE-staging/res_pjsip_async_operations.txt
@@ -0,0 +1,7 @@
+Subject: res_pjsip
+
+The 'async_operations' setting on transports is no longer
+obeyed and instead is always set to 1. This is due to the
+functionality not being applicable to Asterisk and causing
+excess unnecessary memory usage. This setting will now be
+ignored but can also be removed from the configuration file.
diff --git a/res/res_pjsip/config_transport.c b/res/res_pjsip/config_transport.c
index d0a28cd04c..6319ecfafb 100644
--- a/res/res_pjsip/config_transport.c
+++ b/res/res_pjsip/config_transport.c
@@ -659,6 +659,12 @@ static int transport_apply(const struct ast_sorcery *sorcery, void *obj)
 		return -1;
 	}
 
+	if (transport->async_operations != 1) {
+		ast_log(LOG_WARNING, "The async_operations setting on transport '%s' has been set to '%d'. The setting can no longer be set and is always 1.\n",
+			transport_id, transport->async_operations);
+		transport->async_operations = 1;
+	}
+
 	perm_state = find_internal_state_by_transport(transport);
 	if (perm_state) {
 		ast_sorcery_diff(sorcery, perm_state->transport, transport, &changes);
diff --git a/res/res_pjsip/pjsip_config.xml b/res/res_pjsip/pjsip_config.xml
index ca5a266849..9a9ef485bc 100644
--- a/res/res_pjsip/pjsip_config.xml
+++ b/res/res_pjsip/pjsip_config.xml
@@ -1622,7 +1622,7 @@
 						will not suffice.</para></note>
 				</description>
 				<configOption name="async_operations" default="1">
-					<synopsis>Number of simultaneous Asynchronous Operations</synopsis>
+					<synopsis>Number of simultaneous Asynchronous Operations, can no longer be set, always set to 1</synopsis>
 				</configOption>
 				<configOption name="bind">
 					<synopsis>IP Address and optional port to bind to for this transport</synopsis>