diff --git a/Projects/AthGeneration/externals.txt b/Projects/AthGeneration/externals.txt
index 8ea0e812eee807c0b2b1dd881ebe4bdf369e48c6..01775fc400995add656245b075fefa43ee34d0c7 100644
--- a/Projects/AthGeneration/externals.txt
+++ b/Projects/AthGeneration/externals.txt
@@ -9,4 +9,4 @@
 AthGenerationExternalsVersion = 2.0.85
 
 # The version of atlas/Gaudi to use:
-GaudiVersion = v34r0.005
+GaudiVersion = v34r1.000
diff --git a/Projects/AthSimulation/externals.txt b/Projects/AthSimulation/externals.txt
index b72e0bd225f5f236b41b6253d6401581b259075f..636355aa7ab6f440a96f899fdbcc5b7961ee562a 100644
--- a/Projects/AthSimulation/externals.txt
+++ b/Projects/AthSimulation/externals.txt
@@ -9,4 +9,4 @@
 AthSimulationExternalsVersion = 2.0.85
 
 # The version of atlas/Gaudi to use:
-GaudiVersion = v34r0.005
+GaudiVersion = v34r1.000
diff --git a/Projects/Athena/externals.txt b/Projects/Athena/externals.txt
index 596814391928a2985134bba03759313886b77008..520027ac3638a6f9cfee3da7b56c8d4e17abf66d 100644
--- a/Projects/Athena/externals.txt
+++ b/Projects/Athena/externals.txt
@@ -9,4 +9,4 @@
 AthenaExternalsVersion = 2.0.85
 
 # The version of atlas/Gaudi to use:
-GaudiVersion = v34r0.005
+GaudiVersion = v34r1.000