diff --git a/External/Davix/CMakeLists.txt b/External/Davix/CMakeLists.txt
index 382258ace32df199326c128898e18369aefd0d24..f1f57d8216d0bd81319fcf2d80226d0f42f0df86 100644
--- a/External/Davix/CMakeLists.txt
+++ b/External/Davix/CMakeLists.txt
@@ -21,7 +21,7 @@ endif()
 
 # Declare where to get Davix from.
 set( ATLAS_DAVIX_SOURCE
-   "URL;http://cern.ch/lcgpackages/tarFiles/sources/davix-0.8.4.tar.gz;URL_MD5;9980f896de6cb0be9612da5ac3243142"
+   "URL;http://cern.ch/lcgpackages/tarFiles/sources/davix-0.8.6.tar.gz;URL_MD5;0bd3e873fa14605fb9944eff75131806"
    CACHE STRING "The source for Davix" )
 mark_as_advanced( ATLAS_DAVIX_SOURCE )
 
diff --git a/External/Lhapdf/CMakeLists.txt b/External/Lhapdf/CMakeLists.txt
index 2e79e31f752f7c689cb36ac2317866013dcbb2e7..380b4a50ce71db8053e280fc37dce0d7335e0c95 100644
--- a/External/Lhapdf/CMakeLists.txt
+++ b/External/Lhapdf/CMakeLists.txt
@@ -30,7 +30,7 @@ endif()
 
 # Declare where to get LHAPDF from.
 set( ATLAS_LHAPDF_SOURCE
-   "URL;https://lhapdf.hepforge.org/downloads/LHAPDF-6.5.3.tar.gz;URL_MD5;b3b26a1dc31d42f6b744b44b548769bb"
+   "URL;http://cern.ch/lcgpackages/tarFiles/sources/MCGeneratorsTarFiles/LHAPDF-6.5.4.tar.gz;URL_MD5;931347a515af8979387c32fb903fb4e2"
    CACHE STRING "The source for LHAPDF" )
 mark_as_advanced( ATLAS_LHAPDF_SOURCE )