diff -Nru libnest2d-0.4-26-g4d6fb4d/debian/changelog libnest2d-4.12.0/debian/changelog
--- libnest2d-0.4-26-g4d6fb4d/debian/changelog	2020-12-07 12:40:24.000000000 +0000
+++ libnest2d-4.12.0/debian/changelog	2022-01-17 11:44:12.000000000 +0000
@@ -1,3 +1,9 @@
+libnest2d (4.12.0-1) unstable; urgency=medium
+
+  * New upstream version 4.12.0.
+
+ -- Christoph Berg <myon@debian.org>  Mon, 17 Jan 2022 12:44:12 +0100
+
 libnest2d (0.4-26-g4d6fb4d-2) unstable; urgency=medium
 
   * Multi-Arch: foreign.
diff -Nru libnest2d-0.4-26-g4d6fb4d/external/+Boost/CMakeLists.txt libnest2d-4.12.0/external/+Boost/CMakeLists.txt
--- libnest2d-0.4-26-g4d6fb4d/external/+Boost/CMakeLists.txt	2020-10-09 17:11:57.000000000 +0000
+++ libnest2d-4.12.0/external/+Boost/CMakeLists.txt	2021-07-19 12:37:38.000000000 +0000
@@ -121,8 +121,8 @@
 
 ExternalProject_Add(
     rp_Boost
-    URL "https://dl.bintray.com/boostorg/release/1.70.0/source/boost_1_70_0.tar.gz"
-    URL_HASH SHA256=882b48708d211a5f48e60b0124cf5863c1534cd544ecd0664bb534a4b5d506e9
+    URL "http://sourceforge.net/projects/boost/files/boost/1.67.0/boost_1_67_0.tar.gz"
+    URL_HASH SHA256=8aa4e330c870ef50a896634c931adf468b21f8a69b77007e45c444151229f665
     CONFIGURE_COMMAND "${_bootstrap_cmd}"
     PATCH_COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_LIST_DIR}/common.jam ./tools/build/src/tools/common.jam
     BUILD_COMMAND "${_build_cmd}"