diff --git a/common/configdir.c b/common/configdir.c
index 3dd54b6a1..3efc06b8f 100644
--- a/common/configdir.c
+++ b/common/configdir.c
@@ -340,6 +340,9 @@ struct configvar **initial_config_opts(const tal_t *ctx,
 	opt_register_early_noarg("--mainnet",
 				 opt_set_specific_network, "bitcoin",
 				 "Alias for --network=bitcoin");
+	opt_register_early_noarg("--regtest",
+				 opt_set_specific_network, "regtest",
+				 "Alias for --network=regtest");
 	/* Handle --version (and exit) here too */
 	opt_register_version();
 
diff --git a/doc/lightningd-config.5.md b/doc/lightningd-config.5.md
index 51255477d..f64d4c73a 100644
--- a/doc/lightningd-config.5.md
+++ b/doc/lightningd-config.5.md
@@ -81,6 +81,10 @@ This is not valid within the per-network configuration file.
 
   Alias for *network=bitcoin*.
 
+* **regtest**
+
+  Alias for *network=regtest* (added in v23.08)
+
 * **testnet**
 
   Alias for *network=testnet*.