diff --git a/interfaces/cython/SConscript b/interfaces/cython/SConscript
index e07ea2888..23e9c8163 100644
--- a/interfaces/cython/SConscript
+++ b/interfaces/cython/SConscript
@@ -25,7 +25,7 @@ def configure_numpy(python_command):
 def add_dependencies(mod, ext):
     localenv.Depends(mod, ext)
     localenv.Depends(ext, localenv['cantera_staticlib'])
-    localenv.Depends(mod, dataFiles + testFiles)
+    localenv.Depends(mod, dataFiles + testFiles + scripts)
     for f in mglob(localenv, 'cantera', 'pyx', 'pxd'):
         localenv.Depends(ext, f)
 
@@ -56,10 +56,12 @@ build(env.Command('cantera/ck2cti.py',
                   Copy('$TARGET', '$SOURCE')))
 
 # thin wrappers
+scripts = []
 for script in mglob(env, 'scripts', 'py.in'):
   base_name = script.name.split('.')[0]
-  build(env.Command('scripts/%s%s' % (base_name, script_ext), script,
-                    Copy('$TARGET', '$SOURCE')))
+  script = build(env.Command('scripts/%s%s' % (base_name, script_ext), script,
+                             Copy('$TARGET', '$SOURCE')))
+  scripts.append(script)
 
 def install_module(prefix, python_version):
     if prefix == 'USER':
@@ -89,6 +91,8 @@ def install_module(prefix, python_version):
                     global_env['python%s_module_loc' % ver] = os.path.normpath(filename)
                     break
         localenv.AlwaysBuild(localenv.AddPostAction(mod_inst, find_module_dir))
+        if not ver:
+          env['install_python2_action'] = mod_inst
 
     elif localenv['PYTHON_INSTALLER'] == 'debian':
         install(localenv.Command, dummy, mod,
diff --git a/platform/posix/SConscript b/platform/posix/SConscript
index f12c0aa77..797e6a069 100644
--- a/platform/posix/SConscript
+++ b/platform/posix/SConscript
@@ -19,6 +19,7 @@ if localenv['layout'] != 'debian':
 
     target = env.SubstFile('setup_cantera', 'setup_cantera.in')
     localenv.AddPreAction(target, copy_var)
+    localenv.Depends(target, env['install_python2_action'])
     install('$inst_bindir', target)
 
 # 'mixmaster'
diff --git a/src/python/SConscript b/src/python/SConscript
index f876f706e..d114baf51 100644
--- a/src/python/SConscript
+++ b/src/python/SConscript
@@ -100,6 +100,7 @@ if localenv['PYTHON_INSTALLER'] == 'direct':
                 global_env['python_module_loc'] = os.path.normpath(filename)
                 break
     localenv.AlwaysBuild(localenv.AddPostAction(mod_inst, find_module_dir))
+    env['install_python2_action'] = mod_inst
 
 elif localenv['PYTHON_INSTALLER'] == 'debian':
     install(localenv.Command, 'dummy', pymodule,