diff --git a/makepanda/makewheel.py b/makepanda/makewheel.py
index 42f2eca5ef..f8d9b56ef9 100644
--- a/makepanda/makewheel.py
+++ b/makepanda/makewheel.py
@@ -665,6 +665,13 @@ __version__ = '{0}'
         if file.endswith('.py'):
             whl.write_file('pandac/' + file, os.path.join(pandac_dir, file))
 
+    # Let's also add the interrogate databases.
+    input_dir = os.path.join(pandac_dir, 'input')
+    if os.path.isdir(input_dir):
+        for file in os.listdir(input_dir):
+            if file.endswith('.in'):
+                whl.write_file('pandac/input/' + file, os.path.join(input_dir, file))
+
     # Add a panda3d-tools directory containing the executables.
     entry_points = '[console_scripts]\n'
     entry_points += 'eggcacher = direct.directscripts.eggcacher:main\n'