diff --git a/Projects/AnalysisBase/externals.txt b/Projects/AnalysisBase/externals.txt
index e3db318f82cf21bfd90e86989aa562202a6c2ef3..d3a941f4fcb1762a71087477a84ee89918254981 100644
--- a/Projects/AnalysisBase/externals.txt
+++ b/Projects/AnalysisBase/externals.txt
@@ -6,4 +6,4 @@
 # forbidden.
 
 # The version of atlas/atlasexternals to use:
-AnalysisBaseExternalsVersion = 2.0.15
+AnalysisBaseExternalsVersion = 2.0.15.1
diff --git a/Projects/AnalysisTop/externals.txt b/Projects/AnalysisTop/externals.txt
index 7c485ccfa2a0fb14784ed93e0ddf62bd11a7afa4..5d627a3ad9f4ab1afef237153123538c9dd9cd99 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 = 2.0.15
+AnalysisBaseExternalsVersion = 2.0.15.1
diff --git a/Projects/AthDataQuality/externals.txt b/Projects/AthDataQuality/externals.txt
index 86af462a8ee5d9667bffc6b02ebe938fb0a769c6..dd2d05d250dcc9af4adaa02c85f4e3ffa7005824 100644
--- a/Projects/AthDataQuality/externals.txt
+++ b/Projects/AthDataQuality/externals.txt
@@ -5,4 +5,4 @@
 # an "origin/" prefix before it. For tags however this is explicitly
 # forbidden.
 
-AtlasExternalsVersion = 2.0.15
+AtlasExternalsVersion = 2.0.15.1
diff --git a/Projects/AthSimulation/externals.txt b/Projects/AthSimulation/externals.txt
index 6ef7f9b82ab2bfc02891e25f8d25aa252727cdc4..f5bcaa4b2550bb5aa4e4bbb3ec69e987115471a4 100644
--- a/Projects/AthSimulation/externals.txt
+++ b/Projects/AthSimulation/externals.txt
@@ -6,7 +6,7 @@
 # forbidden.
 
 # The version of atlas/atlasexternals to use:
-AthSimulationExternalsVersion = 2.0.15
+AthSimulationExternalsVersion = 2.0.15.1
 
 # The version of atlas/Gaudi to use:
 GaudiVersion = v31r0.000
diff --git a/Projects/Athena/externals.txt b/Projects/Athena/externals.txt
index 9527c8037d384bb5a54beb38cb7d466c0b0c4ce9..8c7b973bd3afedd92eb762f71f0299e57c4fa70e 100644
--- a/Projects/Athena/externals.txt
+++ b/Projects/Athena/externals.txt
@@ -6,7 +6,7 @@
 # forbidden.
 
 # The version of atlas/atlasexternals to use:
-AthenaExternalsVersion = 2.0.15
+AthenaExternalsVersion = 2.0.15.1
 
 # The version of atlas/Gaudi to use: 
 GaudiVersion = v31r0.000