diff --git a/src/profile.rs b/src/profile.rs
index 4bb8d7f..e1ff419 100644
--- a/src/profile.rs
+++ b/src/profile.rs
@@ -70,7 +70,7 @@ impl TryFrom<DateTime> for SystemTime {
 }
 
 impl<'a> LongTermProfile<'a> {
-    pub async fn create_client(&self) -> STSClient {
+    pub async fn create_client(&self, region: String) -> STSClient {
         let credentials = AWSCredentials::new(
             self.access_key.clone(),
             self.secret_key.clone(),
@@ -81,7 +81,7 @@ impl<'a> LongTermProfile<'a> {
         let conf = StsConfig::Builder::new()
             .behavior_version(StsConfig::BehaviorVersion::v2023_11_09())
             .credentials_provider(credentials)
-            .region(Some(StsConfig::Region::new("eu-central-5")))
+            .region(Some(StsConfig::Region::new(region)))
             .build();
 
         STSClient::from_conf(conf)
diff --git a/src/sts/assume_role.rs b/src/sts/assume_role.rs
index 41440b0..6f5289d 100644
--- a/src/sts/assume_role.rs
+++ b/src/sts/assume_role.rs
@@ -62,7 +62,7 @@ impl ShortTermCredentials for AssumeRole {
         lt_profile: &LongTermProfile<'_>,
     ) -> anyhow::Result<ShortTermProfile> {
         let output = lt_profile
-            .create_client()
+            .create_client(config.sts_region.clone())
             .await
             .assume_role()
             .set_role_arn(Some(self.role_arn.clone()))
diff --git a/src/sts/config.rs b/src/sts/config.rs
index cc6ea1d..d59bfae 100644
--- a/src/sts/config.rs
+++ b/src/sts/config.rs
@@ -29,6 +29,13 @@ pub struct CommonStsConfig {
         help = "Force the creation of a new short-term profile even if one already exists"
     )]
     pub force_new_credentials: bool,
+    #[arg(
+        long,
+        global = true,
+        default_value = "us-east-1",
+        help = "The STS region to use for the AWS client"
+    )]
+    pub sts_region: String,
 }
 
 impl CommonStsConfig {
diff --git a/src/sts/session_token.rs b/src/sts/session_token.rs
index de12d4d..6fcef84 100644
--- a/src/sts/session_token.rs
+++ b/src/sts/session_token.rs
@@ -35,7 +35,7 @@ impl ShortTermCredentials for SessionToken {
         lt_profile: &LongTermProfile<'_>,
     ) -> anyhow::Result<ShortTermProfile> {
         let output = lt_profile
-            .create_client()
+            .create_client(config.sts_region.clone())
             .await
             .get_session_token()
             .serial_number(lt_profile.mfa_device.to_string())