diff --git a/src/ScadaLink.SiteRuntime/Actors/DeploymentManagerActor.cs b/src/ScadaLink.SiteRuntime/Actors/DeploymentManagerActor.cs
index 704f463..f4e69a1 100644
--- a/src/ScadaLink.SiteRuntime/Actors/DeploymentManagerActor.cs
+++ b/src/ScadaLink.SiteRuntime/Actors/DeploymentManagerActor.cs
@@ -375,8 +375,12 @@ public class DeploymentManagerActor : ReceiveActor, IWithTimers
                 {
                     try
                     {
-                        var parsed = System.Text.Json.JsonSerializer.Deserialize<Dictionary<string, string>>(connConfig.ConfigurationJson);
-                        if (parsed != null) connectionDetails = parsed;
+                        // Parse as JsonElement to handle mixed value types (string, int, bool)
+                        using var doc = System.Text.Json.JsonDocument.Parse(connConfig.ConfigurationJson);
+                        foreach (var prop in doc.RootElement.EnumerateObject())
+                        {
+                            connectionDetails[prop.Name] = prop.Value.ToString();
+                        }
                     }
                     catch { /* Ignore parse errors */ }
                 }