diff --git a/Botan-1.10.17-add-riscv64.patch b/Botan-1.10.17-add-riscv64.patch
new file mode 100644
index 0000000..c2da72d
--- /dev/null
+++ b/Botan-1.10.17-add-riscv64.patch
@@ -0,0 +1,7 @@
+diff --git a/src/build-data/arch/riscv64.txt b/src/build-data/arch/riscv64.txt
+new file mode 100644
+index 0000000..6e5e0ff
+--- /dev/null
++++ b/src/build-data/arch/riscv64.txt
+@@ -0,0 +1 @@
++endian little
diff --git a/botan.spec b/botan.spec
index 4856bea..975d0a8 100644
--- a/botan.spec
+++ b/botan.spec
@@ -2,10 +2,11 @@
 
 Name:           botan
 Version:        %{major_version}.17
-Release:        38%{?dist}
+Release:        51%{?dist}
 Summary:        Crypto library written in C++
 
-License:        BSD
+# Automatically converted from old format: BSD - review is highly recommended.
+License:        LicenseRef-Callaway-BSD
 URL:            http://botan.randombit.net/
 # tarfile is stripped using repack.sh. original tarfile to be found
 # here: http://botan.randombit.net/releases/Botan-%%{version}.tgz
@@ -21,6 +22,10 @@ Patch2:         botan-1.10.13-python-init.patch
 Patch3:         botan-1.10.17-doc-conf-2to3.patch
 # Fix FTBFS
 Patch4:         botan-1.10.17-u64bit.patch
+# Add RISC-V (riscv64)
+# Upstream in later versions:
+# https://github.com/randombit/botan/blob/master/src/build-data/arch/riscv64.txt
+Patch9:         Botan-1.10.17-add-riscv64.patch
 
 BuildRequires:  gcc-c++
 BuildRequires:  python3
@@ -195,6 +200,45 @@ LD_LIBRARY_PATH=%{buildroot}%{_libdir} ./check --validate
 
 
 %changelog
+* Mon Jan 12 2026 Jonathan Wakely <jwakely@fedoraproject.org> - 1.10.17-51
+- Rebuilt for Boost 1.90
+
+* Fri Sep 19 2025 Python Maint <python-maint@redhat.com> - 1.10.17-50
+- Rebuilt for Python 3.14.0rc3 bytecode
+
+* Fri Aug 15 2025 Python Maint <python-maint@redhat.com> - 1.10.17-49
+- Rebuilt for Python 3.14.0rc2 bytecode
+
+* Wed Jul 23 2025 Fedora Release Engineering <releng@fedoraproject.org> - 1.10.17-48
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_43_Mass_Rebuild
+
+* Tue Jun 03 2025 Python Maint <python-maint@redhat.com> - 1.10.17-47
+- Rebuilt for Python 3.14
+
+* Thu Jan 16 2025 Fedora Release Engineering <releng@fedoraproject.org> - 1.10.17-46
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild
+
+* Wed Aug 28 2024 Miroslav Suchý <msuchy@redhat.com> - 1.10.17-45
+- convert license to SPDX
+
+* Wed Jul 17 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.10.17-44
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild
+
+* Sat Jun 08 2024 Python Maint <python-maint@redhat.com> - 1.10.17-43
+- Rebuilt for Python 3.13
+
+* Sat Feb 24 2024 David Abdurachmanov <davidlt@rivosinc.com> - 1.10.17-42
+- Add support for riscv64
+
+* Tue Jan 23 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.10.17-41
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
+
+* Fri Jan 19 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.10.17-40
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
+
+* Wed Jan 17 2024 Jonathan Wakely <jwakely@redhat.com> - 1.10.17-39
+- Rebuilt for Boost 1.83
+
 * Wed Jul 19 2023 Fedora Release Engineering <releng@fedoraproject.org> - 1.10.17-38
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild