diff --git a/CMakeLists.txt b/CMakeLists.txt
index 90b07a83..0b84e795 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,7 @@
 cmake_minimum_required(VERSION 3.10)
 
 project(libtommath
-    VERSION 1.2.1
+    VERSION 1.3.0
     DESCRIPTION "A free open source portable number theoretic multiple-precision integer (MPI) library written entirely in C."
     HOMEPAGE_URL "https://www.libtom.net/LibTomMath"
     LANGUAGES C)
@@ -164,7 +164,7 @@ install(TARGETS ${PROJECT_NAME}
     LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
     ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT Libraries
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME}
+    PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
 )
 
 # Install libtommath.pc for pkg-config if we build a shared library
@@ -190,14 +190,6 @@ write_basic_package_version_file(
     COMPATIBILITY SameMajorVersion
 )
 
-# Windows uses a different help sytem.
-if((NOT WIN32) AND (NOT CMAKE_HOST_WIN32))
-# install manpage (not gzipped, some BSD's do not want it compressed?)
-install(FILES ${CMAKE_SOURCE_DIR}/doc/tommath.3
-        DESTINATION ${CMAKE_INSTALL_MANDIR}/man3/
-)
-endif()
-
 # install version file
 install(FILES ${PROJECT_VERSION_FILE}
         DESTINATION ${CONFIG_INSTALL_DIR}
diff --git a/appveyor.yml b/appveyor.yml
index 36077a1f..e2354910 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 1.2.1-{build}
+version: 1.3.0-{build}
 branches:
   only:
   - master
diff --git a/changes.txt b/changes.txt
index d7dc0f56..80ff7dd5 100644
--- a/changes.txt
+++ b/changes.txt
@@ -1,3 +1,9 @@
+Mar 27th, 2024
+v1.3.0
+       -- Deprecate more APIs which are replaced in develop (PR #572)
+       -- Add support for CMake (PR #573)
+       -- Add support for GitHub Actions (PR #573)
+
 Sep 04th, 2023
 v1.2.1
        -- Bugfix release because of potential integer overflow
diff --git a/doc/bn.tex b/doc/bn.tex
index 61cd9676..23e8a333 100644
--- a/doc/bn.tex
+++ b/doc/bn.tex
@@ -50,7 +50,7 @@
 \begin{document}
 \frontmatter
 \pagestyle{empty}
-\title{LibTomMath User Manual \\ v1.2.1}
+\title{LibTomMath User Manual \\ v1.3.0}
 \author{LibTom Projects \\ www.libtom.net}
 \maketitle
 This text, the library and the accompanying textbook are all hereby placed in the public domain.  This book has been
diff --git a/libtommath.pc.in b/libtommath.pc.in
index 099b1cd7..7ce50fd1 100644
--- a/libtommath.pc.in
+++ b/libtommath.pc.in
@@ -1,10 +1,9 @@
-prefix=@to-be-replaced@
-exec_prefix=${prefix}
-libdir=${exec_prefix}/lib
-includedir=${prefix}/include
+prefix=@CMAKE_INSTALL_PREFIX@
+libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
 
 Name: LibTomMath
 Description: public domain library for manipulating large integer numbers
-Version: @to-be-replaced@
+Version: @PROJECT_VERSION@
 Libs: -L${libdir} -ltommath
 Cflags: -I${includedir}
diff --git a/makefile.shared b/makefile.shared
index 3398f753..bf0ee43c 100644
--- a/makefile.shared
+++ b/makefile.shared
@@ -70,7 +70,8 @@ install: $(LIBNAME)
 	install -d $(DESTDIR)$(INCPATH)
 	$(LIBTOOL) --mode=install install -m 644 $(LIBNAME) $(DESTDIR)$(LIBPATH)/$(LIBNAME)
 	install -m 644 $(HEADERS_PUB) $(DESTDIR)$(INCPATH)
-	sed -e 's,^prefix=.*,prefix=$(PREFIX),' -e 's,^Version:.*,Version: $(VERSION_PC),' libtommath.pc.in > libtommath.pc
+	sed -e 's,^prefix=.*,prefix=$(PREFIX),' -e 's,^Version:.*,Version: $(VERSION_PC),' -e 's,@CMAKE_INSTALL_LIBDIR@,lib,' \
+		-e 's,@CMAKE_INSTALL_INCLUDEDIR@,include,' libtommath.pc.in > libtommath.pc
 	install -d $(DESTDIR)$(LIBPATH)/pkgconfig
 	install -m 644 libtommath.pc $(DESTDIR)$(LIBPATH)/pkgconfig/
 
diff --git a/makefile.unix b/makefile.unix
index 1cd77525..fdc3fa7b 100644
--- a/makefile.unix
+++ b/makefile.unix
@@ -21,7 +21,7 @@ RANLIB    = ranlib
 CFLAGS    = -O2
 LDFLAGS   =
 
-VERSION   = 1.2.1
+VERSION   = 1.3.0
 
 #Compilation flags
 LTM_CFLAGS  = -I. $(CFLAGS)
diff --git a/makefile_include.mk b/makefile_include.mk
index 71f04dd2..df51a123 100644
--- a/makefile_include.mk
+++ b/makefile_include.mk
@@ -3,9 +3,9 @@
 #
 
 #version of library
-VERSION=1.2.1
-VERSION_PC=1.2.1
-VERSION_SO=3:1:2
+VERSION=1.3.0
+VERSION_PC=1.3.0
+VERSION_SO=4:0:3
 
 PLATFORM := $(shell uname | sed -e 's/_.*//')