diff --git a/Transmission.xcodeproj/project.pbxproj b/Transmission.xcodeproj/project.pbxproj
index dd978e0dc..576edd10c 100644
--- a/Transmission.xcodeproj/project.pbxproj
+++ b/Transmission.xcodeproj/project.pbxproj
@@ -3102,7 +3102,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "cd third-party/miniupnp/miniupnpc\nln -sf . include/miniupnpc\n";
+			shellScript = "cd third-party/miniupnp/miniupnpc\nln -snf . include/miniupnpc\n";
 		};
 		C12F197E1E1AE6D50005E93F /* ShellScript */ = {
 			isa = PBXShellScriptBuildPhase;
diff --git a/libtransmission/port-forwarding-upnp.cc b/libtransmission/port-forwarding-upnp.cc
index 6d7bbc7f7..a4146e0df 100644
--- a/libtransmission/port-forwarding-upnp.cc
+++ b/libtransmission/port-forwarding-upnp.cc
@@ -261,8 +261,13 @@ tr_port_forwarding_state tr_upnpPulse(
 
         FreeUPNPUrls(&handle->urls);
         auto lanaddr = std::array<char, TR_ADDRSTRLEN>{};
-        if (UPNP_GetValidIGD(devlist, &handle->urls, &handle->data, std::data(lanaddr), std::size(lanaddr) - 1) ==
-            UPNP_IGD_VALID_CONNECTED)
+        if (
+#if (MINIUPNPC_API_VERSION >= 18)
+            UPNP_GetValidIGD(devlist, &handle->urls, &handle->data, std::data(lanaddr), std::size(lanaddr) - 1, nullptr, 0)
+#else
+            UPNP_GetValidIGD(devlist, &handle->urls, &handle->data, std::data(lanaddr), std::size(lanaddr) - 1)
+#endif
+            == UPNP_IGD_VALID_CONNECTED)
         {
             tr_logAddInfo(fmt::format(_("Found Internet Gateway Device '{url}'"), fmt::arg("url", handle->urls.controlURL)));
             tr_logAddInfo(fmt::format(_("Local Address is '{address}'"), fmt::arg("address", lanaddr.data())));
diff --git a/third-party/miniupnp b/third-party/miniupnp
index 7f189988a..b55145ec0 160000
--- a/third-party/miniupnp
+++ b/third-party/miniupnp
@@ -1 +1 @@
-Subproject commit 7f189988a0decca0ab7da89000051ab91751f70d
+Subproject commit b55145ec095652289a59c33603f3abafee898273