diff --git a/gnu/local.mk b/gnu/local.mk
index acc1a2bfa7..9cf7fb3e24 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -1575,6 +1575,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/hdf4-reproducibility.patch 		\
   %D%/packages/patches/hdf4-shared-fortran.patch 		\
   %D%/packages/patches/hdf5-config-date.patch			\
+  %D%/packages/patches/hdf5-reproducibility.patch		\
   %D%/packages/patches/hdf-eos2-build-shared.patch 		\
   %D%/packages/patches/hdf-eos2-remove-gctp.patch		\
   %D%/packages/patches/hdf-eos2-fortrantests.patch		\
diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index 6910b32dae..d11fff3bc5 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -62,7 +62,7 @@
 ;;; Copyright © 2022 Roman Scherer <roman.scherer@burningswell.com>
 ;;; Copyright © 2023 Jake Leporte <jakeleporte@outlook.com>
 ;;; Copyright © 2023 Camilo Q.S. (Distopico) <distopico@riseup.net>
-;;; Copyright © 2023 David Elsing <david.elsing@posteo.net>
+;;; Copyright © 2023, 2025 David Elsing <david.elsing@posteo.net>
 ;;; Copyright © 2024 Herman Rimm <herman@rimm.ee>
 ;;; Copyright © 2024 Foundation Devices, Inc. <hello@foundation.xyz>
 ;;; Copyright © 2024, 2025 Artyom V. Poptsov <poptsov.artyom@gmail.com>
@@ -1834,44 +1834,187 @@ (define-public hdf5-1.10
         (base32 "14gih7kmjx4h3lc7pg4fwcl28hf1qqkf2x7rljpxqvzkjrqbxi00"))
        (patches (search-patches "hdf5-config-date.patch"))))))
 
-;; When updating this package, please also update hdf-java.
 (define-public hdf5
   (package
-    (inherit hdf5-1.8)
-    (version "1.14.3")
+    (name "hdf5")
+    (version "1.14.6")
     (source
      (origin
-       (method url-fetch)
-       (uri (list (string-append "https://support.hdfgroup.org/ftp/HDF5/releases/"
-                                 "hdf5-" (version-major+minor version)
-                                 "/hdf5-" version "/src/hdf5-"
-                                 version ".tar.bz2")
-                  (string-append "https://support.hdfgroup.org/ftp/HDF5/"
-                                 "current"
-                                 (apply string-append
-                                        (take (string-split version #\.) 2))
-                                 "/src/hdf5-" version ".tar.bz2")))
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/HDFGroup/hdf5")
+             (commit (string-append "hdf5_" version))))
+       (file-name (git-file-name name version))
        (sha256
-        (base32 "05zr11y3bivfwrbvzbky1q2gjf6r7n92cvvdnh5jilbmxljg49cl"))
-       (patches (search-patches "hdf5-config-date.patch"))))
+        (base32
+         "1f7yv0xra465c3qy8c79fzddib653wzj5dsakb0bs02nwp3xm54q"))
+       (patches (search-patches "hdf5-reproducibility.patch"))
+       (modules '((guix build utils)))
+       (snippet
+        '(for-each
+          delete-file
+          (append
+           (find-files "." "Makefile\\.in$")
+           (find-files "java/lib" "\\.jar$")
+           (list "aclocal.m4"
+                 "bin/compile"
+                 "bin/config.guess"
+                 "bin/config.sub"
+                 "bin/depcomp"
+                 "bin/install-sh"
+                 "bin/ltmain.sh"
+                 "bin/missing"
+                 "bin/test-driver"
+                 "configure"
+                 "HDF5Examples/aclocal.m4"
+                 "HDF5Examples/compile"
+                 "HDF5Examples/configure"
+                 "HDF5Examples/depcomp"
+                 "HDF5Examples/missing"
+                 "HDF5Examples/test-driver"
+                 "hl/src/H5LTanalyze.c"
+                 "hl/src/H5LTparse.c"
+                 "hl/src/H5LTparse.h"
+                 "hl/tools/gif2h5/testfiles/ex_image2.h5"
+                 "hl/tools/gif2h5/testfiles/h52giftst.h5"
+                 "m4/ax_prog_doxygen.m4"
+                 "m4/libtool.m4"
+                 "m4/lt~obsolete.m4"
+                 "m4/ltoptions.m4"
+                 "m4/ltsugar.m4"
+                 "m4/ltversion.m4"
+                 "src/H5config.h.in"
+                 "src/H5Edefin.h"
+                 "src/H5Einit.h"
+                 "src/H5Epubgen.h"
+                 "src/H5Eterm.h"
+                 "src/H5overflow.h"
+                 "src/H5version.h"))))))
+    (build-system gnu-build-system)
+    (inputs
+     (list zlib))
+    (native-inputs
+     (list autoconf-2.71
+           autoconf-archive
+           automake
+           bison
+           flex
+           gfortran
+           libtool
+           ;; Needed to generate some headers and for tests
+           perl
+           which))
     (arguments
-     (substitute-keyword-arguments (package-arguments hdf5-1.8)
-       ((#:phases phases #~%standard-phases)
-        #~(modify-phases #$phases
-            (add-after 'configure 'skip-version-test
-              (lambda _
-                ;; Skip test_check_version since the 'patch-settings' phase
-                ;; modifies the test reference.
-                (substitute* "test/test_check_version.sh.in"
-                  (("TESTING\\(\\).*" all)
-                   (string-append all "\nSKIP; exit 0\n")))))
-            (add-after 'patch-configure 'patch-configure-build-settings
-              (lambda _
-                (substitute* "src/H5build_settings.autotools.c.in"
-                  ;; Don't record the build-time kernel version to make the
-                  ;; library file reproducible.
-                  (("@UNAME_INFO@")
-                   "Linux"))))))))))
+     (list
+      ;; Some of the users, notably Flann, need the C++ interface.
+      #:configure-flags
+      ''("--enable-cxx"
+         "--enable-fortran"
+         "--enable-fortran2003"
+
+         ;; Build a thread-safe library.  Unfortunately,
+         ;; 'configure' invites you to either turn off C++,
+         ;; Fortran, and the high-level interface (HL), or
+         ;; to pass '--enable-unsupported'.  Debian
+         ;; packagers chose to pass '--enable-unsupported'
+         ;; and we follow their lead here.
+         "--enable-threadsafe"
+         "--with-pthread"
+         "--enable-unsupported")
+      ;; Use -fPIC to allow the R bindings to link with the static libraries
+      #:make-flags ''("CFLAGS=-fPIC" "CXXFLAGS=-fPIC")
+      #:phases
+      #~(modify-phases %standard-phases
+          ;; XXX: src/H5private.h includes <fenv.h> and fails to find the
+          ;; stdlib types when the gfortran header is used.  Remove gfortran
+          ;; from CPLUS_INCLUDE_PATH as a workaround.
+          (add-after 'set-paths 'hide-gfortran
+            (lambda _
+              (let ((gfortran #$(this-package-native-input "gfortran")))
+                (setenv "CPLUS_INCLUDE_PATH"
+                        (string-join
+                         (delete (string-append gfortran "/include/c++")
+                                 (string-split (getenv "CPLUS_INCLUDE_PATH") #\:))
+                         ":")))))
+          (add-after 'unpack 'make-gen-deterministic
+            (lambda _
+              (substitute* "bin/make_err"
+                (("keys %major" all)
+                 (string-append "sort " all))
+                (("while.*each \\(%section\\).*")
+                 (string-append
+                  "foreach $sect_name (sort keys %section) {\n"
+                  "        $sect_desc = $section{$sect_name};\n")))))
+          (add-after 'unpack 'generate-flexbison
+            (lambda _
+              (invoke "bash" "bin/genparser" "hl/src")))
+          (add-after 'unpack 'patch-trace-shebang
+            (lambda _
+              (for-each patch-shebang
+                        (find-files "bin" (lambda (file stat)
+                                            (executable-file? file))))))
+          ;; Fixes build on i686, see
+          ;; https://github.com/HDFGroup/hdf5/commit/0af668f4091f1c35f621d2acdeadd34db6756976
+          (add-after 'unpack 'patch-configure.ac
+            (lambda _
+              (substitute* "configure.ac"
+                (("AC_DEFINE.*HAVE_FLOAT128.*" orig)
+                 (string-append orig "\nAC_CHECK_SIZEOF([__float128])\n")))))
+          ;; This is a known issue on i686, see
+          ;; https://github.com/HDFGroup/hdf5/issues/4926
+          (add-after 'unpack 'fix-fortran-i686-test
+            (lambda _
+              (substitute* "fortran/test/tH5R.F90"
+                (((string-append
+                   "CALL h5rget_obj_name_f\\(C_LOC\\(ref_ptr\\(2\\)\\),"
+                   " \"\", error, name_len=buf_size \\)"))
+                 (string-append
+                  "CALL h5rget_obj_name_f(C_LOC(ref_ptr(2)),"
+                  " \"xxxxxxxxxxxxxx\", error, name_len=buf_size)")))))
+          (add-before 'configure 'patch-configure
+            (lambda _
+              (substitute* "configure"
+                (("/bin/mv") "mv"))))
+          (add-after 'configure 'patch-settings
+            (lambda _
+              ;; libhdf5.settings contains the full path of the compilers
+              ;; used, and its contents are included in libhdf5.so.  We
+              ;; truncate the hashes to avoid unnecessary store references to
+              ;; those compilers:
+              (substitute* '("src/H5build_settings.c"
+                             "src/libhdf5.settings")
+                (("(/gnu/store/)([a-zA-Z0-9]*)" all prefix hash)
+                 (string-append prefix (string-take hash 10) "..."))
+                ;; Don't record the build-time kernel version to make the
+                ;; settings file reproducible.
+                (("Uname information:[^\"\n\\\\]*")
+                 "Uname information: Linux"))))
+          (add-after 'configure 'generate-headers
+            (lambda _
+              (invoke "perl" "bin/make_err" "src/H5err.txt")
+              (invoke "perl" "bin/make_vers" "src/H5vers.txt")
+              (invoke "perl" "bin/make_overflow" "src/H5overflow.txt")))
+          ;; Remove include flag to directory in source tree
+          (add-after 'configure 'remove-subfiling-cppflags
+            (lambda _
+              (substitute* '("src/H5build_settings.c"
+                             "src/libhdf5.settings"
+                             "bin/h5cc"
+                             "c++/src/h5c++")
+                (("-I.*/src/H5FDsubfiling") ""))))
+          (add-after 'install 'patch-references
+            (lambda _
+              (let ((bin (string-append #$output "/bin"))
+                    (zlib #$(this-package-input "zlib")))
+                (substitute* (find-files bin "h5p?cc")
+                  (("-lz" lib)
+                   (string-append "-L" zlib "/lib " lib)))))))))
+    (home-page "https://www.hdfgroup.org")
+    (synopsis "Management suite for extremely large and complex data")
+    (description "HDF5 is a suite that makes possible the management of
+extremely large and complex data collections.")
+    (license (license:x11-style
+              "https://support.hdfgroup.org/ftp/HDF5/releases/COPYING.html"))))
 
 ;; Keep this in sync with the current hdf5 package.
 (define-public hdf-java
diff --git a/gnu/packages/patches/hdf5-reproducibility.patch b/gnu/packages/patches/hdf5-reproducibility.patch
new file mode 100644
index 0000000000..56c9308c10
--- /dev/null
+++ b/gnu/packages/patches/hdf5-reproducibility.patch
@@ -0,0 +1,20 @@
+Honor SOURCE_DATE_EPOCH when exporting configuration date.
+
+--- a/configure.ac
++++ b/configure.ac
+@@ -3566,7 +3566,14 @@
+ AC_SUBST([H5_VERSION])
+ 
+ ## Configuration date
+-AC_SUBST([CONFIG_DATE]) CONFIG_DATE="`date`"
++AC_SUBST([CONFIG_DATE]) CONFIG_DATE="`date -u`"
++if test -n "$SOURCE_DATE_EPOCH"; then
++  CONFIG_DATE=`date -u -d "@$SOURCE_DATE_EPOCH" 2>/dev/null \
++               || date -u -r "$SOURCE_DATE_EPOCH" 2>/dev/null`
++  if test -z "$CONFIG_DATE"; then
++    as_fn_error $? "malformed SOURCE_DATE_EPOCH" "$LINENO" 5
++  fi
++fi
+ 
+ ## User doing the configuration
+ AC_SUBST([CONFIG_USER]) CONFIG_USER="`whoami`@`hostname`"
