diff --git a/astrowidgets/core.py b/astrowidgets/core.py
index 3e573a8..0cd9464 100644
--- a/astrowidgets/core.py
+++ b/astrowidgets/core.py
@@ -19,7 +19,7 @@
 from ginga.AstroImage import AstroImage
 from ginga.canvas.CanvasObject import drawCatalog
 from ginga.web.jupyterw.ImageViewJpw import EnhancedCanvasView
-from ginga.util.wcs import raDegToString, decDegToString
+from ginga.util.wcs import ra_deg_to_str, dec_deg_to_str
 
 __all__ = ['ImageWidget']
 
@@ -214,7 +214,7 @@ def _mouse_move_cb(self, viewer, button, data_x, data_y):
                 try:
                     ra, dec = image.pixtoradec(data_x, data_y)
                     val += ' (RA: {}, DEC: {})'.format(
-                        raDegToString(ra), decDegToString(dec))
+                        ra_deg_to_str(ra), dec_deg_to_str(dec))
                 except Exception:
                     val += ' (RA, DEC: WCS error)'
 
diff --git a/setup.cfg b/setup.cfg
index 31bb032..ba8f33b 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -36,7 +36,7 @@ zip_safe = False
 packages = find:
 install_requires =
     astropy
-    ginga
+    ginga>=3.4
     pillow
     ipywidgets>=7.5
     ipyevents>=0.6.3