diff --git a/setup.py b/setup.py
index 35c9658..a12f257 100644
--- a/setup.py
+++ b/setup.py
@@ -127,7 +127,7 @@ def get_build_args():
             _LOGGER.warn('pkg-config failed to find tesseract/lept libraries: {}'.format(e))
         build_args = get_tesseract_version()
 
-    if build_args['cython_compile_time_env']['TESSERACT_VERSION'] >= 4.:
+    if build_args['cython_compile_time_env']['TESSERACT_VERSION'] >= 0x040000:
         _LOGGER.debug('tesseract >= 4.00 requires c++11 compiler support')
         build_args['extra_compile_args'] = ['-std=c++11']
 
diff --git a/tesserocr.pyx b/tesserocr.pyx
index fac83d4..1172b7d 100644
--- a/tesserocr.pyx
+++ b/tesserocr.pyx
@@ -18,7 +18,7 @@ tesseract 3.04.00
  ['eng', 'osd', 'equ'])
 """
 
-__version__ = '2.2.0'
+__version__ = '2.2.1'
 
 import os
 from io import BytesIO