diff --git a/pyproject.toml b/pyproject.toml
index b7d8984..bd9c88f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,6 +18,7 @@ classifiers = [
     "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.9",
     "Topic :: Scientific/Engineering :: Physics",
     "Topic :: System :: Hardware :: Hardware Drivers",
 ]
@@ -29,7 +30,7 @@ dependencies = [
     "pandas",
     "pymeasure",
     "Pillow",
-    # "gpib-ctypes"
+    # "gpib-ctypes", # JOSS TIP: Keep this commented for GitHub Actions to pass (requires OS drivers)
 ]
 
 [project.urls]
@@ -39,8 +40,8 @@ dependencies = [
 [project.gui-scripts]
 pica-launcher = "PICA_v6:main"
 
-# --- CRITICAL SECTION FOR YOUR FOLDER STRUCTURE ---
+# --- CRITICAL CONFIGURATION FOR YOUR FOLDER STRUCTURE ---
 [tool.setuptools.packages.find]
-where = ["."]  # Look in the root directory
-include = ["*"]  # Automatically find folders like 'Keithley_2400', 'Utilities', etc.
-exclude = ["tests*", "_assets*", "Setup*"]  # Don't install the tests or assets
+where = ["."]  # Tells pip your code is in the root, not 'src'
+include = ["*"]  # Explicitly includes all subfolders (Keithley_2400, Utilities, etc.)
+exclude = ["tests*", "_assets*", "Setup*"]  # Excludes non-code assets from the installed package