diff --git a/CMakeLists.txt.in b/CMakeLists.txt.in
index c25df8b..d14910f 100644
--- a/CMakeLists.txt.in
+++ b/CMakeLists.txt.in
@@ -36,8 +36,8 @@
 
 externalproject_add (
     Boost URL
-    https://dl.bintray.com/boostorg/release/1.71.0/source/boost_1_71_0.tar.gz
-    URL_MD5 5f521b41b79bf8616582c4a8a2c10177 SOURCE_DIR
+    https://dl.bintray.com/boostorg/release/1.73.0/source/boost_1_73_0.tar.gz
+    URL_MD5 4036cd27ef7548b8d29c30ea10956196 SOURCE_DIR
     "${CMAKE_BINARY_DIR}/boost-src" BINARY_DIR "${CMAKE_BINARY_DIR}/boost-build"
     CONFIGURE_COMMAND "" BUILD_COMMAND "" INSTALL_COMMAND mkdir -p
     "${CMAKE_BINARY_DIR}/prefix/include/" && cp -R