diff --git a/ChangeLog b/ChangeLog
index a8f4054d..717390ca 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2017-08-13  rocky <rb@dustyfeet.com>
+
+	* ChangeLog, README.rst, __pkginfo__.py, pytest/test_basic.py,
+	uncompyle6/parser.py, uncompyle6/scanner.py: Allow version to be
+	string...  in get_python_parser and get_scanner
+
 2017-08-10  rocky <rb@dustyfeet.com>
 
 	* : commit c38dc61021368f11e95cef70ee77e4a43dba1598 Author: rocky
diff --git a/NEWS b/NEWS
index e1d418c2..efcee88e 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,16 @@
-uncompyle6 2.11.2 2017-08-09
+uncompyle6 2.11.4 2017-08-15
+
+* scanner and parser now allow 3-part version string lookups,
+  e.g. 2.7.1 We allow a float here, but if passed a string like '2.7'. or
+* unpin 3.5.1. xdis 3.5.4 has been releasd and fixes the problems we had. Use that.
+* some routnes here moved to xdis. Use the xdis version
+* README.rst: Link typo Name is trepan2 now not trepan
+* xdis-forched change adjust for COMPARE_OP "is-not" in
+  semanatic routines. We need "is not".
+* Some PyPy tolerance in validate testing.
+* Some pyston tolerance
+
+uncompyle6 2.11.3 2017-08-09
 
 Very minor changes
 
diff --git a/__pkginfo__.py b/__pkginfo__.py
index 6c0154b1..a64393d6 100644
--- a/__pkginfo__.py
+++ b/__pkginfo__.py
@@ -40,7 +40,7 @@ entry_points       = {
     ]}
 ftp_url            = None
 install_requires   = ['spark-parser >= 1.6.1, < 1.7.0',
-                      'xdis == 3.5.1']
+                      'xdis >= 3.5.4, < 3.6.0']
 license            = 'MIT'
 mailing_list       = 'python-debugger@googlegroups.com'
 modname            = 'uncompyle6'
diff --git a/pytest/validate.py b/pytest/validate.py
index 5d437cb3..d3e46877 100644
--- a/pytest/validate.py
+++ b/pytest/validate.py
@@ -126,7 +126,10 @@ def validate_uncompyle(text, mode='exec'):
     original_text = text
 
     deparsed = deparse_code(PYTHON_VERSION, original_code,
-                            compile_mode=mode, out=StringIO())
+
+                            compile_mode=mode,
+                            out=StringIO(),
+                            is_pypy=IS_PYPY)
     uncompyled_text = deparsed.text
     uncompyled_code = compile(uncompyled_text, '<string>', 'exec')
 
diff --git a/uncompyle6/parser.py b/uncompyle6/parser.py
index 1bf1d5ce..83391a32 100644
--- a/uncompyle6/parser.py
+++ b/uncompyle6/parser.py
@@ -9,13 +9,10 @@ Common uncompyle parser routines.
 import sys
 
 from xdis.code import iscode
+from xdis.magics import py_str2float
 from spark_parser import GenericASTBuilder, DEFAULT_DEBUG as PARSER_DEFAULT_DEBUG
 from uncompyle6.show import maybe_show_asm
 
-# FIXME: put in xdis
-from uncompyle6.scanner import version_str2float
-
-
 class ParserError(Exception):
     def __init__(self, token, offset):
         self.token = token
@@ -614,7 +611,7 @@ def get_python_parser(
 
     # If version is a string, turn that into the corresponding float.
     if isinstance(version, str):
-        version = version_str2float(version)
+        version = py_str2float(version)
 
     # FIXME: there has to be a better way...
     # We could do this as a table lookup, but that would force us
diff --git a/uncompyle6/scanner.py b/uncompyle6/scanner.py
index 040c6464..750c565c 100755
--- a/uncompyle6/scanner.py
+++ b/uncompyle6/scanner.py
@@ -15,6 +15,7 @@ import sys
 from uncompyle6 import PYTHON3, IS_PYPY
 from uncompyle6.scanners.tok import Token
 from xdis.bytecode import op_size
+from xdis.magics import py_str2float
 
 # The byte code versions we support
 PYTHON_VERSIONS = (1.5,
@@ -256,28 +257,11 @@ def parse_fn_counts(argc):
     return ((argc & 0xFF), (argc >> 8) & 0xFF, (argc >> 16) & 0x7FFF)
 
 
-# FIXME: put in xdis
-from xdis.magics import magics
-def version_str2float(version):
-    if version in magics:
-        magic = magics[version]
-        for v, m in list(magics.items()):
-            if m == magic:
-                try:
-                    return float(v)
-                except:
-                    pass
-                pass
-            pass
-    raise RuntimeError("Can't find a valid Python version for version %s"
-                       % version)
-    return
-
 def get_scanner(version, is_pypy=False, show_asm=None):
 
     # If version is a string, turn that into the corresponding float.
     if isinstance(version, str):
-        version = version_str2float(version)
+        version = py_str2float(version)
 
     # Pick up appropriate scanner
     if version in PYTHON_VERSIONS:
diff --git a/uncompyle6/version.py b/uncompyle6/version.py
index 632937ca..e7a1612b 100644
--- a/uncompyle6/version.py
+++ b/uncompyle6/version.py
@@ -1,3 +1,3 @@
 # This file is suitable for sourcing inside bash as
 # well as importing into Python
-VERSION='2.11.3'
+VERSION='2.11.4'