diff --git a/build.py b/build.py
index 729c0754..e48f299c 100644
--- a/build.py
+++ b/build.py
@@ -10,6 +10,7 @@ import shutil
 import sys
 import pathlib
 from typing import List, Tuple
+from string import Template
 from os.path import join, isdir
 import py2exe
 from config import (
@@ -18,9 +19,20 @@ from config import (
     appversion,
     copyright,
     git_shorthash_from_head,
+    _static_appversion,
 )
 
 
+def iss_build(template_path: str, output_file: str) -> None:
+    """Build the .iss file needed for building the installer EXE."""
+    sub_vals = {"appver": _static_appversion}
+    with open(template_path, encoding="UTF8") as template_file:
+        src = Template(template_file.read())
+        newfile = src.substitute(sub_vals)
+    with open(output_file, "w", encoding="UTF8") as new_file:
+        new_file.write(newfile)
+
+
 def system_check(dist_dir: str) -> str:
     """Check if the system is able to build."""
     if sys.version_info < (3, 11):
@@ -166,6 +178,11 @@ def build() -> None:
         options=options,
     )
 
+    iss_template_path: str = "./resources/EDMC_Installer_Config_template.txt"
+    iss_file_path: str = "./EDMC_Installer_Config.iss"
+    # Build the ISS file
+    iss_build(iss_template_path, iss_file_path)
+
 
 if __name__ == "__main__":
     build()
diff --git a/installer.py b/installer.py
index 3405557f..754b3373 100644
--- a/installer.py
+++ b/installer.py
@@ -7,19 +7,7 @@ See LICENSE file.
 """
 import os
 import subprocess
-from string import Template
 from build import build
-from config import _static_appversion as appversion
-
-
-def iss_build(template_path: str, output_file: str) -> None:
-    """Build the .iss file needed for building the installer EXE."""
-    sub_vals = {"appver": appversion}
-    with open(template_path, encoding="UTF8") as template_file:
-        src = Template(template_file.read())
-        newfile = src.substitute(sub_vals)
-    with open(output_file, "w", encoding="UTF8") as new_file:
-        new_file.write(newfile)
 
 
 def run_inno_setup_installer(iss_path: str) -> None:
@@ -52,8 +40,6 @@ def run_inno_setup_installer(iss_path: str) -> None:
 if __name__ == "__main__":
     build()
     # Add the ISS Template File
-    iss_template_path: str = "./resources/EDMC_Installer_Config_template.txt"
     iss_file_path: str = "./EDMC_Installer_Config.iss"
     # Build the ISS file
-    iss_build(iss_template_path, iss_file_path)
     run_inno_setup_installer(iss_file_path)