diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7ce4e9126e0dd0dc86feb48ff31fc03ab26c8a9a..d99e70c16cd46e3ccd82479fb805a1e124bdd433 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@ INCLUDE(CheckCSourceCompiles)
 INCLUDE(cmake/macros.cmake)
 PROJECT(libaec)
 SET(libaec_VERSION_MAJOR 0)
-SET(libaec_VERSION_MINOR 2)
+SET(libaec_VERSION_MINOR 3)
 SET(CMAKE_BUILD_TYPE Release)
 ENABLE_TESTING()
 
diff --git a/ChangeLog b/ChangeLog
index e7992025c660a70987bf601bc4c66e480a6e8e94..c2fb214d171577048896b9bbaedaed2fdadd1f59 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
+2014-08-06  Mathis Rosenhauer  <rosenhauer@dkrz.de>
+
 	v0.3
 
+	Performance improvement for encoding pre-precessed data.
+
 	More efficient coding of second extension if reference
 	sample is present.
 
diff --git a/configure.ac b/configure.ac
index a36105e5c7fdd0e68d130cab2f1c57636f721434..983571ed78a0ca3d800279cb4b60f6ca0767e4da 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_PREREQ([2.64])
-AC_INIT([libaec], [0.2], [rosenhauer@dkrz.de])
+AC_INIT([libaec], [0.3], [rosenhauer@dkrz.de])
 
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_AUX_DIR([config])
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 94a38ccf3ded3dda2d2e9357f10bab101ab7ee52..3d90b94fbc832ecc337001a514c249bfa6ff702d 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,13 +1,11 @@
 SET(libaec_SRCS encode.c encode_accessors.c decode.c)
 ADD_LIBRARY(aec ${LIB_TYPE} ${libaec_SRCS})
 SET_TARGET_PROPERTIES(aec PROPERTIES
-  VERSION 0
-  SOVERSION 0.0
+  SOVERSION 0.0.1
   )
 ADD_LIBRARY(sz ${LIB_TYPE} sz_compat.c)
 SET_TARGET_PROPERTIES(sz PROPERTIES
-  VERSION 0
-  SOVERSION 0.0
+  SOVERSION 2.0.1
   )
 
 TARGET_LINK_LIBRARIES(sz aec)
diff --git a/src/Makefile.am b/src/Makefile.am
index 79d5e2588316021e486ebf2dc7646c9a79b2627c..c8966dc19c70f3e08339ec65e6904bc30d07ad68 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,11 +1,11 @@
 lib_LTLIBRARIES = libaec.la libsz.la
 libaec_la_SOURCES = encode.c encode_accessors.c decode.c \
 encode.h encode_accessors.h decode.h
-libaec_la_LDFLAGS = -version-info 0:0:0
+libaec_la_LDFLAGS = -version-info 0:1:0
 
 libsz_la_SOURCES = sz_compat.c
 libsz_la_LIBADD = libaec.la
-libsz_la_LDFLAGS = -version-info 0:0:0
+libsz_la_LDFLAGS = -version-info 2:1:0
 
 include_HEADERS = libaec.h szlib.h