diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 71a3a5331..96ca4961c 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -18,7 +18,7 @@ string(REPLACE "-O3" "-O2" CMAKE_C_FLAGS_RELEASE ${CMAKE_C_FLAGS_RELEASE})
 
 add_library                     (leptonica ${LIBRARY_TYPE} ${src} ${hdr})
 set_target_properties           (leptonica PROPERTIES VERSION   ${VERSION_PLAIN})
-set_target_properties           (leptonica PROPERTIES SOVERSION 5.2.0)
+set_target_properties           (leptonica PROPERTIES SOVERSION 5.3.0)
 if (WIN32)
 set_target_properties           (leptonica PROPERTIES OUTPUT_NAME       leptonica-${VERSION_PLAIN})
 set_target_properties           (leptonica PROPERTIES DEBUG_OUTPUT_NAME leptonica-${VERSION_PLAIN}d)
diff --git a/src/Makefile.am b/src/Makefile.am
index cedbd8f0d..f4ecd01ab 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -4,7 +4,7 @@ AM_CPPFLAGS = $(ZLIB_CFLAGS) $(LIBPNG_CFLAGS) $(JPEG_CFLAGS) $(LIBTIFF_CFLAGS) $
 lib_LTLIBRARIES = liblept.la
 liblept_la_LIBADD = $(LIBM) $(ZLIB_LIBS) $(LIBPNG_LIBS) $(JPEG_LIBS) $(GIFLIB_LIBS) $(LIBTIFF_LIBS) $(LIBWEBP_LIBS) $(LIBJP2K_LIBS) $(GDI_LIBS)
 
-liblept_la_LDFLAGS = -no-undefined -version-info 5:2:0
+liblept_la_LDFLAGS = -no-undefined -version-info 5:3:0
 
 liblept_la_SOURCES = adaptmap.c affine.c                        \
  affinecompose.c arrayaccess.c                                  \