diff --git a/cmake/toolchain/heptools-dev-base.cmake b/cmake/toolchain/heptools-dev-base.cmake
index 4965450ff6158ce7d32388745a4d1255b20e9d28..525b79575bf1a893514f1ce0b06905afd7cf8775 100644
--- a/cmake/toolchain/heptools-dev-base.cmake
+++ b/cmake/toolchain/heptools-dev-base.cmake
@@ -586,7 +586,7 @@ endif()
 LCG_external_package(xqilla            2.3.3                                    )
 LCG_external_package(xrootd            4.11.2                                   )
 LCG_external_package(xz                5.0.4                                    )
-LCG_external_package(yamlcpp           0.6.2                                    )
+LCG_external_package(yamlcpp           0.6.3                                    )
 LCG_external_package(zeromq            4.3.2                                    )
 LCG_external_package(zict              0.1.4                                    )
 LCG_external_package(zipp              0.5.1                                    )
diff --git a/externals/CMakeLists.txt b/externals/CMakeLists.txt
index 4f989a18e8744fc797bfa7deaa33e0245365f2c0..c962c2d4aebda1e59bb34a3b369c01e177846e27 100644
--- a/externals/CMakeLists.txt
+++ b/externals/CMakeLists.txt
@@ -1993,11 +1993,8 @@ LCGPackage_Add(
   URL ${GenURL}/yaml-cpp-${yamlcpp_native_version}.tar.gz
   CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
              -DBUILD_SHARED_LIBS=ON
-             -DBOOST_ROOT=${Boost_home}
-             ${Boost_extra_configuration}
   BUILD_IN_SOURCE 1
   INSTALL_COMMAND ${MAKE} install
-  DEPENDS Boost
 )
 
 foreach(v ${yamlcpp_native_version})