diff --git a/crates/kumo-api-types/src/shaping.rs b/crates/kumo-api-types/src/shaping.rs
index 8cbc8b19..64daff4f 100644
--- a/crates/kumo-api-types/src/shaping.rs
+++ b/crates/kumo-api-types/src/shaping.rs
@@ -27,6 +27,8 @@ use std::marker::PhantomData;
 #[cfg(feature = "lua")]
 use std::sync::Arc;
 use std::time::Duration;
+#[cfg(feature = "lua")]
+use throttle::LimitSpec;
 use throttle::ThrottleSpec;
 
 #[derive(Deserialize, Serialize, Debug, Clone)]
@@ -1011,7 +1013,7 @@ pub struct ProviderEntry {
     pub provider_name: String,
 
     #[serde(default)]
-    pub provider_connection_limit: Option<usize>,
+    pub provider_connection_limit: Option<LimitSpec>,
 
     #[serde(default)]
     pub provider_max_message_rate: Option<ThrottleSpec>,
@@ -1197,7 +1199,7 @@ impl ProviderEntry {
             let mut limits = toml::Table::new();
             limits.insert(
                 format!("shaping-provider-{}-{source}-limit", self.provider_name),
-                toml::Value::Integer((*limit) as i64),
+                toml::Value::String(limit.to_string()),
             );
             implied.insert(
                 "additional_connection_limits".to_string(),
diff --git a/crates/throttle/src/lib.rs b/crates/throttle/src/lib.rs
index 375b410d..aeac23c7 100644
--- a/crates/throttle/src/lib.rs
+++ b/crates/throttle/src/lib.rs
@@ -246,6 +246,12 @@ impl std::fmt::Debug for LimitSpec {
     }
 }
 
+impl std::fmt::Display for LimitSpec {
+    fn fmt(&self, fmt: &mut std::fmt::Formatter) -> std::fmt::Result {
+        write!(fmt, "{:?}", self)
+    }
+}
+
 impl LimitSpec {
     pub const fn new(limit: u64) -> Self {
         Self {