diff --git a/Projects/AthSimulation/externals.txt b/Projects/AthSimulation/externals.txt
index c0e7ed4de0b04033b19adaea5473fb48483ad735..a0bf3b54617b47908d38dd8e14a6684c42b6e9b5 100644
--- a/Projects/AthSimulation/externals.txt
+++ b/Projects/AthSimulation/externals.txt
@@ -9,4 +9,4 @@
 AthSimulationExternalsVersion = 2.0.20
 
 # The version of atlas/Gaudi to use:
-GaudiVersion = v31r0.000
+GaudiVersion = v31r0.001
diff --git a/Projects/Athena/externals.txt b/Projects/Athena/externals.txt
index ed4578a542e8e32673b32f83ace7c7e7331cb153..b2ff34243dffdd290feff852378824e76ba7acfb 100644
--- a/Projects/Athena/externals.txt
+++ b/Projects/Athena/externals.txt
@@ -9,4 +9,4 @@
 AthenaExternalsVersion = 2.0.20
 
 # The version of atlas/Gaudi to use:
-GaudiVersion = v31r0.000
+GaudiVersion = v31r0.001