diff --git a/serialization/src/TorchForceProxy.cpp b/serialization/src/TorchForceProxy.cpp
index 6d9d312..840eada 100644
--- a/serialization/src/TorchForceProxy.cpp
+++ b/serialization/src/TorchForceProxy.cpp
@@ -74,7 +74,7 @@ TorchForceProxy::TorchForceProxy() : SerializationProxy("TorchForce") {
 }
 
 void TorchForceProxy::serialize(const void* object, SerializationNode& node) const {
-    node.setIntProperty("version", 3);
+    node.setIntProperty("version", 4);
     const TorchForce& force = *reinterpret_cast<const TorchForce*>(object);
     node.setStringProperty("file", force.getFile());
     try {
@@ -95,11 +95,14 @@ void TorchForceProxy::serialize(const void* object, SerializationNode& node) con
     SerializationNode& paramDerivs = node.createChildNode("ParameterDerivatives");
     for (int i = 0; i < force.getNumEnergyParameterDerivatives(); i++)
         paramDerivs.createChildNode("Parameter").setStringProperty("name", force.getEnergyParameterDerivativeName(i));
+    SerializationNode& properties = node.createChildNode("Properties");
+    for (auto& prop : force.getProperties())
+        properties.createChildNode("Property").setStringProperty("name", prop.first).setStringProperty("value", prop.second);
 }
 
 void* TorchForceProxy::deserialize(const SerializationNode& node) const {
     int storedVersion = node.getIntProperty("version");
-    if (storedVersion > 3)
+    if (storedVersion > 4)
         throw OpenMMException("Unsupported version number");
     TorchForce* force;
     if (storedVersion == 1) {
@@ -126,6 +129,9 @@ void* TorchForceProxy::deserialize(const SerializationNode& node) const {
         if (child.getName() == "ParameterDerivatives")
             for (auto& parameter : child.getChildren())
                 force->addEnergyParameterDerivative(parameter.getStringProperty("name"));
+        if (child.getName() == "Properties")
+            for (auto& property : child.getChildren())
+                force->setProperty(property.getStringProperty("name"), property.getStringProperty("value"));
     }
     return force;
 }
diff --git a/serialization/tests/TestSerializeTorchForce.cpp b/serialization/tests/TestSerializeTorchForce.cpp
index 410f00a..98753ee 100644
--- a/serialization/tests/TestSerializeTorchForce.cpp
+++ b/serialization/tests/TestSerializeTorchForce.cpp
@@ -51,6 +51,8 @@ void serializeAndDeserialize(TorchForce force) {
     force.setUsesPeriodicBoundaryConditions(true);
     force.setOutputsForces(true);
     force.addEnergyParameterDerivative("y");
+    force.setProperty("useCUDAGraphs", "true");
+    force.setProperty("CUDAGraphWarmupSteps", "5");
 
     // Serialize and then deserialize it.
 
@@ -77,6 +79,9 @@ void serializeAndDeserialize(TorchForce force) {
     ASSERT_EQUAL(force.getNumEnergyParameterDerivatives(), force2.getNumEnergyParameterDerivatives());
     for (int i = 0; i < force.getNumEnergyParameterDerivatives(); i++)
         ASSERT_EQUAL(force.getEnergyParameterDerivativeName(i), force2.getEnergyParameterDerivativeName(i));
+    ASSERT_EQUAL(force.getProperties().size(), force2.getProperties().size());
+    for (auto& prop : force.getProperties())
+        ASSERT_EQUAL(prop.second, force2.getProperties().at(prop.first));
 }
 
 void testSerializationFromModule() {