diff --git a/Projects/AnalysisBase/externals.txt b/Projects/AnalysisBase/externals.txt
index 0887c75a12bbbcb0363546ece80ffc9891e30f42..2a95f3e4ae3ede2f016ccb6a22f94b43fa0ac55e 100644
--- a/Projects/AnalysisBase/externals.txt
+++ b/Projects/AnalysisBase/externals.txt
@@ -1,4 +1,4 @@
 # Versions of the various externals to build before starting the build of
 # this project, when doing a full stack nightly build.
 
-AnalysisBaseExternalsVersion = 061e4f81
+AnalysisBaseExternalsVersion = 6491b6ae
diff --git a/Projects/Athena/externals.txt b/Projects/Athena/externals.txt
index c1173480ce6dc2d39c37526e6f64befae4911c7d..8dec02d3e4c6070de29a4c00aa2d55528cfea6a5 100644
--- a/Projects/Athena/externals.txt
+++ b/Projects/Athena/externals.txt
@@ -5,5 +5,5 @@
 # an "origin/" prefix before it. For tags however this is explicitly
 # forbidden.
 
-AthenaExternalsVersion = 061e4f81
+AthenaExternalsVersion = 6491b6ae
 GaudiVersion = v28r1.conditions.010