diff --git a/.gitignore b/.gitignore
index e66b05a..6e2fa0d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /eccodes-2.40.0-Source.tar.gz
 /eccodes-2.42.0-Source.tar.gz
 /eccodes-2.44.0-Source.tar.gz
+/eccodes-2.45.0-Source.tar.gz
diff --git a/eccodes-soversion.patch b/eccodes-soversion.patch
index fd4b224..1d08917 100644
--- a/eccodes-soversion.patch
+++ b/eccodes-soversion.patch
@@ -1,6 +1,6 @@
---- eccodes-2.44.0-Source.unchanged/fortran/CMakeLists.txt	2025-10-06 11:49:11.000000000 +0200
-+++ eccodes-2.44.0-Source/fortran/CMakeLists.txt	2025-11-07 11:33:03.765320420 +0100
-@@ -46,7 +46,8 @@ if( HAVE_FORTRAN )
+--- eccodes-2.45.0-Source.unchanged/fortran/CMakeLists.txt	2026-01-19 14:07:07.000000000 +0100
++++ eccodes-2.45.0-Source/fortran/CMakeLists.txt	2026-01-28 13:41:51.406812493 +0100
+@@ -74,7 +74,8 @@ if( HAVE_FORTRAN )
                           GENERATED       grib_f90.f90 eccodes_f90.f90
                           PUBLIC_INCLUDES $<BUILD_INTERFACE:${CMAKE_Fortran_MODULE_DIRECTORY}>
                                           $<INSTALL_INTERFACE:${INSTALL_INCLUDE_DIR}>
@@ -10,14 +10,14 @@
  
      if( DEFINED ecbuild_VERSION AND NOT ${ecbuild_VERSION} VERSION_LESS 3.1 )
          # Installed module directory is not in the PUBLIC INCLUDES!
---- eccodes-2.44.0-Source.unchanged/src/eccodes/CMakeLists.txt	2025-10-06 11:49:11.000000000 +0200
-+++ eccodes-2.44.0-Source/src/eccodes/CMakeLists.txt	2025-11-07 11:33:03.784437554 +0100
-@@ -447,6 +447,8 @@ ecbuild_add_library( TARGET    eccodes
-                      PRIVATE_LIBS ${ECCODES_EXTRA_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT} ${AEC_LIBRARIES} ${PNG_LIBRARIES}
-                      PUBLIC_LIBS  ${CMATH_LIBRARIES} ${THREADS_LIBRARIES}
-                      TEMPLATES ${eccodes_extra_src_files}
-+		     SOVERSION ${ECCODES_SOVERSION}
+--- eccodes-2.45.0-Source.unchanged/src/eccodes/CMakeLists.txt	2026-01-19 14:07:17.000000000 +0100
++++ eccodes-2.45.0-Source/src/eccodes/CMakeLists.txt	2026-01-28 13:45:12.736091176 +0100
+@@ -453,6 +453,8 @@ ecbuild_add_library(
+         ${CMATH_LIBRARIES}
+         ${THREADS_LIBRARIES}
+     TEMPLATES ${eccodes_extra_src_files}
++    SOVERSION ${ECCODES_SOVERSION}
 +
-                      INSTALL_HEADERS_LIST
-                               grib_api.h
-                               eccodes.h
+     INSTALL_HEADERS_LIST
+         grib_api.h
+         eccodes.h
diff --git a/eccodes.spec b/eccodes.spec
index 64408c3..dc10b0f 100644
--- a/eccodes.spec
+++ b/eccodes.spec
@@ -3,8 +3,8 @@
 %endif
 
 Name:           eccodes
-Version:        2.44.0
-Release:        3%{?dist}
+Version:        2.45.0
+Release:        1%{?dist}
 Summary:        WMO data format decoding and encoding
 
 # force the shared libraries to have these so versions
@@ -260,7 +260,10 @@ tar xf %SOURCE1
 popd
 
 %build
-# TODO: Please submit an issue to upstream (rhbz#2380563)
+
+# In response to change proposal CMake 4.0 (rhbz#2380563)
+# upstream support has been requested in this feature request:
+# https://github.com/ecmwf/eccodes/issues/409
 export CMAKE_POLICY_VERSION_MINIMUM=3.5
 
 #-- The following features are disabled by default and not switched on:
@@ -275,7 +278,8 @@ export CMAKE_POLICY_VERSION_MINIMUM=3.5
 # * PNG , support for PNG decoding/encoding
 # * ECCODES_OMP_THREADS , enable OMP threads
 # * EXTRA_TESTS , enable extended regression testing
-#
+# * EXTRA_TOOLS , enable the installation of tools for the METAR format
+
 #-- The following features are set to AUTO by default and
 #   explicitely switched on to ensure they don't vanish unnoticed
 #   in case of dependency problems during the build:
@@ -295,13 +299,23 @@ export CMAKE_POLICY_VERSION_MINIMUM=3.5
 # when I try to build for armv7hl (other archs do not complain ......)
 # I have no idea what causes this difference in behaviour.
 
+# Note: the option:
+#      -DENABLE_MEMFS=ON
+# reformats the definition tables into big binary blobs to be included
+# in the c code.
+# This reduces the install size from 160MB to 72MB (in version 2.45.0),
+# but it also makes it impossible for users to create and use their own
+# local table definitions. Therefore, to allow flexibility on the users
+# side, this option is not activated at the moment.
+
 %cmake3 -DINSTALL_LIB_DIR=%{_lib} \
         -DENABLE_ECCODES_OMP_THREADS=ON \
-        -DENABLE_EXTRA_TESTS=ON \
         -DENABLE_JPG=ON \
         -DENABLE_PNG=ON \
         -DENABLE_FORTRAN=ON \
         -DENABLE_NETCDF=ON \
+        -DECCODES_INSTALL_EXTRA_TOOLS=ON \
+        -DENABLE_EXTRA_TESTS=ON \
         -DCMAKE_SKIP_INSTALL_RPATH=TRUE \
         -DECCODES_SOVERSION=%{so_version} \
         -DECCODES_SOVERSION_F90=%{so_version_f90} \
@@ -460,10 +474,13 @@ ctest3 -V %{?_smp_mflags}
 %doc %{_datadir}/doc/%{name}/
 
 %changelog
+
+* Wed Jan 28 2026 Jos de Kloe <josdekloe@gmail.com> - 2.45.0-1
+- Update to 2.45.0
+
 * Fri Jan 16 2026 Fedora Release Engineering <releng@fedoraproject.org> - 2.44.0-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild
 
-
 * Mon Nov 10 2025 Cristian Le <git@lecris.dev> - 2.44.0-2
 - Allow to build with CMake 4.0 (rhbz#2380563)
 
diff --git a/sources b/sources
index 4dc5dc6..482a87e 100644
--- a/sources
+++ b/sources
@@ -2,3 +2,4 @@ SHA512 (eccodes_test_data_20250202.tar.gz) = 8b4c7159dd7ed0e1e69068ec7dcabe94064
 SHA512 (eccodes-2.40.0-Source.tar.gz) = 39b09da398a864888f1b7da867adae63da9e512a865807c1dd0f4b76e242c46d6ec75f7db3a554c01c4fb60dd9677cd8b77bc03dac89931cbdf461c607b100c8
 SHA512 (eccodes-2.42.0-Source.tar.gz) = 205246b250762ab6e7ac3050726ac5ce67ab689c8c393b153e7c084fb71edc40d64ee04e2fb32b3ad2a1426e65581126c0c8288e9088c27a7468f6b534f29b58
 SHA512 (eccodes-2.44.0-Source.tar.gz) = 63f81db07103ab3c6c0497ca3d0bae5b8a0841ed83a2b88831ddce756489a84aa394af7673c1438e2ea7a55107970cf87b8222da31321ef70ecc55cc99a3ddf5
+SHA512 (eccodes-2.45.0-Source.tar.gz) = aa5f5c01ce9d551706ca8242ab6a4663b0c6bf114aa229e2aa01dba549fac1d3d57a06cf8907f18dcba4c9f1a446cbc253c3675ebf77f62ee5ac2c4fb8800dce