diff --git a/library/explorerhat/pins.py b/library/explorerhat/pins.py
index 29bd13c..1a049be 100644
--- a/library/explorerhat/pins.py
+++ b/library/explorerhat/pins.py
@@ -11,13 +11,19 @@ def __init__(self):
         self.stop_event = threading.Event()
         self.daemon = True
 
+    def alive(self):
+        try:
+            return self.isAlive()
+        except AttributeError:
+            return self.is_alive()
+
     def start(self):
-        if not self.isAlive():
+        if not self.alive():
             self.stop_event.clear()
             threading.Thread.start(self)
 
     def stop(self):
-        if self.isAlive():
+        if self.alive():
             self.stop_event.set()
             self.join()
 
diff --git a/library/setup.py b/library/setup.py
index dc8d1a5..9f81ac7 100755
--- a/library/setup.py
+++ b/library/setup.py
@@ -50,5 +50,5 @@
     url         = 'http://shop.pimoroni.com',
     classifiers = classifiers,
     packages    = ['explorerhat'],
-    install_requires= ['cap1xxx']
+    install_requires= ['cap1xxx>=0.1.4']
 )