diff --git a/Projects/AnalysisBase/externals.txt b/Projects/AnalysisBase/externals.txt
index 1feed545f5febafbbe9eae7d8a9688ddec46de5c..bcd511688e3f76e1225427db650a5a973da62e21 100644
--- a/Projects/AnalysisBase/externals.txt
+++ b/Projects/AnalysisBase/externals.txt
@@ -6,4 +6,4 @@
 # forbidden.
 
 # The version of atlas/atlasexternals to use:
-AnalysisBaseExternalsVersion = 2.1.0
+AnalysisBaseExternalsVersion = 2.1.1
diff --git a/Projects/AthAnalysis/externals.txt b/Projects/AthAnalysis/externals.txt
index d6c4f8f8b7dc50b8cbdd7717c6a17819b5e0e85f..e770add9f35069350d1fa7d216ae250a92e43a91 100644
--- a/Projects/AthAnalysis/externals.txt
+++ b/Projects/AthAnalysis/externals.txt
@@ -6,4 +6,4 @@
 # forbidden.
 
 # The version of atlas/atlasexternals to use:
-AthAnalysisExternalsVersion = 2.1.0
+AthAnalysisExternalsVersion = 2.1.1
diff --git a/Projects/AthGeneration/externals.txt b/Projects/AthGeneration/externals.txt
index 91bd0f2288d3dccc39b24c6ada186b1a15755c5a..6b04b1b8c26c3c71d9401a777db268af5314a055 100644
--- a/Projects/AthGeneration/externals.txt
+++ b/Projects/AthGeneration/externals.txt
@@ -6,4 +6,4 @@
 # forbidden.
 
 # The version of atlas/atlasexternals to use:
-AthGenerationExternalsVersion = 2.1.0
+AthGenerationExternalsVersion = 2.1.1
diff --git a/Projects/AthSimulation/externals.txt b/Projects/AthSimulation/externals.txt
index c734857bdb5db3225960ceedf4e967751215af81..6d7e053cf63e3c4d8d159478d6d339eba0a26d3f 100644
--- a/Projects/AthSimulation/externals.txt
+++ b/Projects/AthSimulation/externals.txt
@@ -6,4 +6,4 @@
 # forbidden.
 
 # The version of atlas/atlasexternals to use:
-AthSimulationExternalsVersion = 2.1.0
+AthSimulationExternalsVersion = 2.1.1
diff --git a/Projects/Athena/externals.txt b/Projects/Athena/externals.txt
index b2391103be06e176250ee059ea66bcaabc7b54e3..ade283cffe210d0c4afbec2a3ad0849690542ad7 100644
--- a/Projects/Athena/externals.txt
+++ b/Projects/Athena/externals.txt
@@ -6,4 +6,4 @@
 # forbidden.
 
 # The version of atlas/atlasexternals to use:
-AthenaExternalsVersion = 2.1.0
+AthenaExternalsVersion = 2.1.1
diff --git a/Projects/DetCommon/externals.txt b/Projects/DetCommon/externals.txt
index 2ee352e40e6ba1a423b0f7d86061d15a15068fd1..2e52cae64ba3391b8a901617d6806e2bb0437944 100644
--- a/Projects/DetCommon/externals.txt
+++ b/Projects/DetCommon/externals.txt
@@ -6,4 +6,4 @@
 # forbidden.
 
 # The version of atlas/atlasexternals to use:
-AtlasExternalsVersion = 2.1.0
+AtlasExternalsVersion = 2.1.1
diff --git a/Projects/VP1Light/externals.txt b/Projects/VP1Light/externals.txt
index fec56df5085fe0c556bfa1d2b0fdd71231cd76d5..6ba55e9d1f46f11f7295f0b7a9317d294d87efb4 100644
--- a/Projects/VP1Light/externals.txt
+++ b/Projects/VP1Light/externals.txt
@@ -6,4 +6,4 @@
 # forbidden.
 
 # The version of atlas/atlasexternals to use:
-VP1LightExternalsVersion = 2.1.0
+VP1LightExternalsVersion = 2.1.1