diff --git a/project.py b/project.py
index 9117ef7..d74d93f 100644
--- a/project.py
+++ b/project.py
@@ -65,6 +65,7 @@ class Args:
 class Project:
     top_verilog_filename: str
     mux_address: int
+    analog_pins: tuple[int, ...]
     commit_id: str
     sort_id: int
 
diff --git a/shuttle.py b/shuttle.py
index 80a16e8..e8c22c1 100644
--- a/shuttle.py
+++ b/shuttle.py
@@ -113,8 +113,9 @@ class ShuttleConfig:
                     range(len(module["analog"]))
                 ), f"analog pins are not contiguous for {module_name}"
 
+                project.analog_pins = tuple(module["analog"].values())
                 if len(module["analog"]) > 0:
-                    project_info["analog_pins"] = list(module["analog"].values())
+                    project_info["analog_pins"] = project.analog_pins
 
                 project_index.append(project_info)
                 mux_index_reverse[module_name] = mux_address
@@ -123,7 +124,6 @@ class ShuttleConfig:
             if project.info.top_module not in mux_index_reverse:
                 logging.error(f"no placement found for {project}!")
                 exit(1)
-            project.mux_address = mux_index_reverse[project.info.top_module]
 
         repo = git.Repo(".")
 
diff --git a/shuttle_index.py b/shuttle_index.py
index d571b06..48de378 100644
--- a/shuttle_index.py
+++ b/shuttle_index.py
@@ -9,7 +9,7 @@ class ShuttleIndexProject(TypedDict):
     tiles: str
     repo: str
     commit: str
-    analog_pins: NotRequired[List[int]]
+    analog_pins: NotRequired[tuple[int, ...]]
 
 
 class ShuttleIndexLayout(TypedDict):