diff --git a/zfec/setup.py b/zfec/setup.py
index 287b630f7..9bd37e11d 100644
--- a/zfec/setup.py
+++ b/zfec/setup.py
@@ -59,7 +59,7 @@ trove_classifiers=[
     ]
 
 setup(name='zfec',
-      version='1.0.0a2',
+      version='1.0.0a3',
       summary='a fast C implementation of Reed-Solomon erasure coding with command-line, C, and Python interfaces',
       description='Erasure coding -- also called "forward error correction" -- is the generation of redundant blocks of information such that if some blocks are lost ("erased") then the original data can be recovered from the remaining blocks.  This package contains an optimized implementation along with command-line, C, and Python interfaces.',
       author='Zooko O\'Whielacronx',
diff --git a/zfec/zfec/__init__.py b/zfec/zfec/__init__.py
index f0f5a2f75..272904a40 100644
--- a/zfec/zfec/__init__.py
+++ b/zfec/zfec/__init__.py
@@ -10,7 +10,7 @@ from util.version import Version
 
 # For an explanation of what the parts of the version string mean,
 # please see pyutil.version.
-__version__ = Version("1.0.0a2-1-STABLE")
+__version__ = Version("1.0.0a3-1-STABLE")
 
 # Please put a URL or other note here which shows where to get the branch of
 # development from which this version grew.