diff --git a/Projects/AthGeneration/externals.txt b/Projects/AthGeneration/externals.txt
index 5caf54e480be3588c9ab438b7dd3c88d84df1fe8..f24529601a85d8212636fa9b1de8b0de1c4c65cf 100644
--- a/Projects/AthGeneration/externals.txt
+++ b/Projects/AthGeneration/externals.txt
@@ -9,4 +9,4 @@
 AthGenerationExternalsVersion = 2.0.75
 
 # The version of atlas/Gaudi to use:
-GaudiVersion = v34r0.003
+GaudiVersion = v34r0.004
diff --git a/Projects/AthSimulation/externals.txt b/Projects/AthSimulation/externals.txt
index adfec9d799b6975d64f4ce4ec3837aec8fa331d0..2e95ca67549a4e0ea815964d9face7feac500aba 100644
--- a/Projects/AthSimulation/externals.txt
+++ b/Projects/AthSimulation/externals.txt
@@ -9,4 +9,4 @@
 AthSimulationExternalsVersion = 2.0.75
 
 # The version of atlas/Gaudi to use:
-GaudiVersion = v34r0.003
+GaudiVersion = v34r0.004
diff --git a/Projects/Athena/externals.txt b/Projects/Athena/externals.txt
index 9b8e12b9e241ff0f3dd6e62b25538eb1a432d60d..fdc05b490d5ff2c18ecac2934e87297d884fd747 100644
--- a/Projects/Athena/externals.txt
+++ b/Projects/Athena/externals.txt
@@ -9,4 +9,4 @@
 AthenaExternalsVersion = 2.0.75
 
 # The version of atlas/Gaudi to use:
-GaudiVersion = v34r0.003
+GaudiVersion = v34r0.004