VERSION             | 2 +-
 install.texi        | 2 +-
 news.texi           | 7 +++++++
 pygost/__init__.py  | 2 +-
 pygost/gost28147.py | 2 +-

diff --git a/VERSION b/VERSION
index b04853bccaead31689c8948e5da3af2db7fd4b8fb121891bacdea52d83bab5ff..c228ab57ed0d95dbe9c9d8a37f590862f41f073fa643b27c5e8ec74450875208 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.5
+4.6
diff --git a/install.texi b/install.texi
index fd64ab91cf248083605475e4d75a46b032d6c791734ccba3fa65ddd9eb3beb37..59d871b9aa129eb46c82d5333d8ce04fc74fe4c34af7321aa4389ed87b4c793c 100644
--- a/install.texi
+++ b/install.texi
@@ -1,7 +1,7 @@
 @node Download
 @unnumbered Download
 
-@set VERSION 4.5
+@set VERSION 4.6
 
 No additional dependencies except Python 2.7/3.x interpreter are required.
 
diff --git a/news.texi b/news.texi
index a1999e14d567705f6c84fd8febabd7dc913af994dd3d62f9626dff69df56cf88..0f945ab43d3db39ec0f824869777d6210cf43bc2937b8b534eec3ab3d3894b0a 100644
--- a/news.texi
+++ b/news.texi
@@ -3,6 +3,13 @@ @unnumbered News
 
 @table @strong
 
+@anchor{Release 4.6}
+@item 4.6
+    @itemize
+    @item Fix invalid @code{gost28147.addmod}'s behaviour with much
+        bigger values than the modulo
+    @end itemize
+
 @anchor{Release 4.5}
 @item 4.5
     @itemize
diff --git a/pygost/__init__.py b/pygost/__init__.py
index bb0b239e9f1d594c7c240dd35a585028226dd6cb03c8695d5014ae9e920f923a..18cc6f5c085a2987706a041ff8615206f4a8e6dec9a6cafbb0b0989a836940b5 100644
--- a/pygost/__init__.py
+++ b/pygost/__init__.py
@@ -3,4 +3,4 @@
 PyGOST is free software: see the file COPYING for copying conditions.
 """
 
-__version__ = "4.5"
+__version__ = "4.6"
diff --git a/pygost/gost28147.py b/pygost/gost28147.py
index 290754aefe75b43b2d15e26c972e054a6d6b25aaf9525fe4ee8620d14725e5a9..c36e2919c9404313611a32294925e8073271fcee9747f0bf3b95676fc325ab4e 100644
--- a/pygost/gost28147.py
+++ b/pygost/gost28147.py
@@ -190,7 +190,7 @@ def addmod(x, y, mod=2 ** 32):
     """ Modulo adding of two integers
     """
     r = x + y
-    return r if r < mod else r - mod
+    return r if r < mod else r % mod
 
 
 def _shift11(x):