diff --git a/java/src/org/infradead/libopenconnect/LibOpenConnect.java b/java/src/org/infradead/libopenconnect/LibOpenConnect.java
index acd409489a44c8aec7948c565dd599c6c5bcbebd..56fe45543e9d3d269167c1b8684dd4c13369dc49 100644
--- a/java/src/org/infradead/libopenconnect/LibOpenConnect.java
+++ b/java/src/org/infradead/libopenconnect/LibOpenConnect.java
@@ -128,6 +128,7 @@ public abstract class LibOpenConnect {
 	public synchronized native void setCertExpiryWarning(int seconds);
 	public synchronized native void setDPD(int minSeconds);
 	public synchronized native void setTrojanInterval(int seconds);
+	public synchronized native void setPassTOS(boolean isEnabled);
 	public synchronized native int setProxyAuth(String methods);
 	public synchronized native int setHTTPProxy(String proxy);
 	public synchronized native void setXMLSHA1(String hash);
diff --git a/jni.c b/jni.c
index 9981ded880b299478963686010d3f2b14c05fc49..cd50a5386d44aedb60523d1cc7c080d59a7d1d62 100644
--- a/jni.c
+++ b/jni.c
@@ -1051,6 +1051,16 @@ JNIEXPORT void JNICALL Java_org_infradead_libopenconnect_LibOpenConnect_setTroja
 	openconnect_set_trojan_interval(ctx->vpninfo, arg);
 }
 
+JNIEXPORT void JNICALL Java_org_infradead_libopenconnect_LibOpenConnect_setPassTOS(
+	JNIEnv *jenv, jobject jobj, jboolean arg)
+{
+	struct libctx *ctx = getctx(jenv, jobj);
+
+	if (!ctx)
+		return;
+	openconnect_set_pass_tos(ctx->vpninfo, arg);
+}
+
 JNIEXPORT void JNICALL Java_org_infradead_libopenconnect_LibOpenConnect_setPFS(
 	JNIEnv *jenv, jobject jobj, jboolean arg)
 {