diff --git a/CMakeLists.txt b/CMakeLists.txt
index 069e99d..a27c14f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -613,6 +613,7 @@ ExternalProject_Add(boost
     BUILD_IN_SOURCE 1
     ${BOOST_PATCHSET}
     CONFIGURE_COMMAND ${BOOST_CONFIGURE_COMMAND}
+    COMMAND <SOURCE_DIR>/b2 --help
     BUILD_COMMAND <SOURCE_DIR>/b2 install
         toolset=${BOOST_TOOLSET}
         -j${BOOST_PARALLEL_JOBS}
diff --git a/Sources.cmake b/Sources.cmake
index 5ac34e0..67bad7d 100644
--- a/Sources.cmake
+++ b/Sources.cmake
@@ -54,7 +54,7 @@ set(GLEW_VERSION 2.2.0)
 set(GLEW_URL http://downloads.sourceforge.net/project/glew/glew/${GLEW_VERSION}/glew-${GLEW_VERSION}.tgz)
 set(GLEW_MD5 3579164bccaef09e36c0af7f4fd5c7c7)
 
-set(BOOST_VERSION 1.84.0)
+set(BOOST_VERSION 1.85.0)
 string(REPLACE "." "_" BOOST_VERSION_ ${BOOST_VERSION})
 set(BOOST_URL https://downloads.sourceforge.net/project/boost/boost/${BOOST_VERSION}/boost_${BOOST_VERSION_}.tar.gz)
-set(BOOST_MD5 ae3f48777db74c0309b49becc2eddada)
+set(BOOST_MD5 53aeccc3167909ee770e34469f8dd592)