diff --git a/include/tquic.h b/include/tquic.h
index d77392b9..abf927fa 100644
--- a/include/tquic.h
+++ b/include/tquic.h
@@ -711,6 +711,14 @@ void quic_config_enable_stateless_reset(struct quic_config_t *config, bool enabl
  */
 void quic_config_set_cid_len(struct quic_config_t *config, uint8_t v);
 
+/**
+ * Set the anti-amplification factor.
+ *
+ * The server limits the data sent to an unvalidated address to
+ * `anti_amplification_factor` times the received data.
+ */
+void quic_config_set_anti_amplification_factor(struct quic_config_t *config, uint8_t v);
+
 /**
  * Set the batch size for sending packets.
  * Applicable to Endpoint only.
diff --git a/src/ffi.rs b/src/ffi.rs
index 718d4769..e939143c 100644
--- a/src/ffi.rs
+++ b/src/ffi.rs
@@ -504,6 +504,15 @@ pub extern "C" fn quic_config_set_cid_len(config: &mut Config, v: u8) {
     config.set_cid_len(v as usize);
 }
 
+/// Set the anti-amplification factor.
+///
+/// The server limits the data sent to an unvalidated address to
+/// `anti_amplification_factor` times the received data.
+#[no_mangle]
+pub extern "C" fn quic_config_set_anti_amplification_factor(config: &mut Config, v: u8) {
+    config.set_anti_amplification_factor(v as usize);
+}
+
 /// Set the batch size for sending packets.
 /// Applicable to Endpoint only.
 #[no_mangle]