diff --git a/services/feature-flags/src/config.rs b/services/feature-flags/src/config.rs
index a2ba50550..537b56172 100644
--- a/services/feature-flags/src/config.rs
+++ b/services/feature-flags/src/config.rs
@@ -1,42 +1,46 @@
 use aws_sdk_dynamodb::{Endpoint, Region};
 use clap::{builder::FalseyValueParser, Parser};
 use http::Uri;
 use once_cell::sync::Lazy;
 use tracing::info;
 
-use crate::constants::{AWS_REGION, DEFAULT_LOCALSTACK_URL};
+use crate::constants::{
+  AWS_REGION, DEFAULT_LOCALSTACK_URL, HTTP_SERVER_DEFAULT_PORT,
+};
 
 #[derive(Parser)]
 #[command(version, about, long_about = None)]
 pub struct AppConfig {
   /// Run the service in sandbox
   #[arg(long = "sandbox", default_value_t = false)]
   #[arg(value_parser = FalseyValueParser::new())]
   pub is_sandbox: bool,
   /// AWS Localstack service URL, applicable in sandbox mode
   #[arg(long, default_value_t = DEFAULT_LOCALSTACK_URL.to_string())]
   pub localstack_url: String,
+  #[arg(long = "port", default_value_t = HTTP_SERVER_DEFAULT_PORT)]
+  pub http_port: u16,
 }
 
 pub static CONFIG: Lazy<AppConfig> = Lazy::new(|| AppConfig::parse());
 
 pub fn parse_cmdline_args() {
   Lazy::force(&CONFIG);
 }
 
 pub async fn load_aws_config() -> aws_types::SdkConfig {
   let mut config_builder =
     aws_config::from_env().region(Region::new(AWS_REGION));
 
   if CONFIG.is_sandbox {
     info!(
       "Running in sandbox environment. Localstack URL: {}",
       &CONFIG.localstack_url
     );
     config_builder = config_builder.endpoint_resolver(Endpoint::immutable(
       Uri::from_static(&CONFIG.localstack_url),
     ));
   }
 
   config_builder.load().await
 }
diff --git a/services/feature-flags/src/constants.rs b/services/feature-flags/src/constants.rs
index c8c9af131..df3d2f99d 100644
--- a/services/feature-flags/src/constants.rs
+++ b/services/feature-flags/src/constants.rs
@@ -1,30 +1,31 @@
 pub const AWS_REGION: &str = "us-east-2";
 pub const DEFAULT_LOCALSTACK_URL: &str = "http://localhost:4566";
 pub const LOG_LEVEL_ENV_VAR: &str =
   tracing_subscriber::filter::EnvFilter::DEFAULT_ENV;
+pub const HTTP_SERVER_DEFAULT_PORT: u16 = 50051;
 
 // The configuration of feature flags is stored in a table in DynamoDB.
 // Each row is identified by a compound primary key consisting of
 // partition key - platform and sort key - feature.
 // A row also contains the configuration, which is a map indexed  by code
 // version with values containing boolean flags for staff and non-staff config.
 // A sample row from the db looks like this:
 // {
 //   "feature": S("FEATURE_1"),
 //   "configuration": M({
 //     "123": M({
 //       "staff": Bool(true),
 //       "non-staff": Bool(false)
 //     })
 //   }),
 //   "platform": S("ANDROID")
 //  }
 pub const FEATURE_FLAGS_TABLE_NAME: &str = "feature-flags";
 pub const FEATURE_FLAGS_PLATFORM_FIELD: &str = "platform";
 pub const FEATURE_FLAGS_CONFIG_FIELD: &str = "configuration";
 pub const FEATURE_FLAGS_FEATURE_FIELD: &str = "feature";
 pub const FEATURE_FLAGS_STAFF_FIELD: &str = "staff";
 pub const FEATURE_FLAGS_NON_STAFF_FIELD: &str = "non-staff";
 
 pub const PLATFORM_IOS: &str = "IOS";
 pub const PLATFORM_ANDROID: &str = "ANDROID";