diff --git a/setup.py b/setup.py
index a95f538..3941310 100644
--- a/setup.py
+++ b/setup.py
@@ -36,7 +36,7 @@ def find_version():
         name="spykeviewer",
         version=version,
         packages=find_packages(),
-        install_requires=['guidata', 'guiqwt>=2.1.4,<4.0', 'spyder>=2.1.0',
+        install_requires=['guidata', 'guiqwt>=2.1.4,<4.0', 'spyder>=2.1.0,<4.0',
                           'spykeutils[plot,plugin]>=0.4.0',
                           'neo>=0.2.1', 'matplotlib', 'scipy'],
         entry_points={'gui_scripts': ['spykeviewer = spykeviewer.start:main']},
diff --git a/spykeviewer/ui/main_window.py b/spykeviewer/ui/main_window.py
old mode 100644
new mode 100755
index 6d48986..527b004
--- a/spykeviewer/ui/main_window.py
+++ b/spykeviewer/ui/main_window.py
@@ -21,7 +21,12 @@
                           QSettings, QCoreApplication, QUrl)
 
 from spyderlib.widgets.internalshell import InternalShell
-from spyderlib.widgets.externalshell.namespacebrowser import NamespaceBrowser
+try:  # Support for spyder < 3
+    from spyderlib.widgets.externalshell.namespacebrowser import \
+         NamespaceBrowser
+except ImportError:
+    from spyderlib.widgets.variableexplorer.namespacebrowser import \
+         NamespaceBrowser
 from spyderlib.widgets.sourcecode.codeeditor import CodeEditor
 from spyderlib.utils.misc import get_error_match
 
@@ -47,8 +52,12 @@
 logger = logging.getLogger('spykeviewer')
 
 
-# Monkeypatch variable editor
-from spyderlib.widgets.dicteditor import DictDelegate
+# Monkeypatch variable editor to report error in message box
+try:  # spyder < 3
+    from spyderlib.widgets.dicteditor import DictDelegate
+except ImportError:
+    from spyderlib.widgets.variableexplorer.collectionseditor import \
+         CollectionsDelegate as DictDelegate
 _orig_createEditor = DictDelegate.createEditor
 
 
diff --git a/spykeviewer/ui/main_window_neo.py b/spykeviewer/ui/main_window_neo.py
old mode 100644
new mode 100755
index d84b55a..27719c4
--- a/spykeviewer/ui/main_window_neo.py
+++ b/spykeviewer/ui/main_window_neo.py
@@ -10,7 +10,11 @@
 from PyQt4.QtCore import (Qt, pyqtSignature, QThread)
 from PyQt4.QtGui import (QMessageBox, QApplication,
                          QProgressDialog, QFileDialog)
-from spyderlib.widgets.dicteditor import DictEditor
+try:  # Support for spyder < 3
+    from spyderlib.widgets.dicteditor import DictEditor
+except ImportError:
+    from spyderlib.widgets.variableexplorer.collectionseditor import \
+         CollectionsEditor as DictEditor
 
 from spykeutils import SpykeException
 from spykeutils.progress_indicator import ignores_cancel