diff --git a/Projects/AnalysisBase/externals.txt b/Projects/AnalysisBase/externals.txt
index 359b7a33dbaed5a2b3db6fa15aa747a77f7322b6..885e49df41b5433ed5717f0c6f976c2c1d22dd46 100644
--- a/Projects/AnalysisBase/externals.txt
+++ b/Projects/AnalysisBase/externals.txt
@@ -6,4 +6,5 @@
 # forbidden.
 
 # The version of atlas/atlasexternals to use:
-AnalysisBaseExternalsVersion = 4ae54d4b
+AnalysisBaseExternalsVersion = 5b5c77c6
+
diff --git a/Projects/AnalysisTop/externals.txt b/Projects/AnalysisTop/externals.txt
index 5b676c7ee77831f610829fa05bdf04d9504b58a5..abb5a32e1a2634865378ff55043d5fd76f25b7ec 100644
--- a/Projects/AnalysisTop/externals.txt
+++ b/Projects/AnalysisTop/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 = 4ae54d4b
+AnalysisBaseExternalsVersion = 5b5c77c6
diff --git a/Projects/AthSimulation/externals.txt b/Projects/AthSimulation/externals.txt
index 7678f982c45110262c901899162c65e5b4065720..5c2b2e7d40a4edc5492b28fddc6bfa0a4a48c04a 100644
--- a/Projects/AthSimulation/externals.txt
+++ b/Projects/AthSimulation/externals.txt
@@ -6,7 +6,7 @@
 # forbidden.
 
 # The version of atlas/atlasexternals to use:
-AthSimulationExternalsVersion = 4ae54d4b
+AthSimulationExternalsVersion = 5b5c77c6
 
 # The version of atlas/Gaudi to use:
 GaudiVersion = v28r2.011
diff --git a/Projects/Athena/externals.txt b/Projects/Athena/externals.txt
index 339a6ecb1b5b5be660f915af0a591c2e9ec4fb57..e09c9ddfdd56ce096e7566220025bc51224eb336 100644
--- a/Projects/Athena/externals.txt
+++ b/Projects/Athena/externals.txt
@@ -6,7 +6,7 @@
 # forbidden.
 
 # The version of atlas/atlasexternals to use:
-AthenaExternalsVersion = 4ae54d4b
+AthenaExternalsVersion = 5b5c77c6
 
 # The version of atlas/Gaudi to use:
 GaudiVersion = v28r2.011