diff --git a/lhcbnightlyconf/Gauss.py b/lhcbnightlyconf/Gauss.py
index e7e41fcccb7a47787d36479505972915b3ac7474..c6f2e0236ed33c06a430bb7a0f11e06499ac1596 100644
--- a/lhcbnightlyconf/Gauss.py
+++ b/lhcbnightlyconf/Gauss.py
@@ -374,16 +374,18 @@ gaussinoPreRelease = create_gaussino_slot(
     'Prerelase slot for Gauss-on-Gaussino',
 )
 gaussinoPreRelease.LCG.version = '101'
-gaussinoPreRelease.Gaudi.version = 'master'
-gaussinoPreRelease.Gaudi.disabled = False
-gaussinoPreRelease.LHCb.version = 'master'
-gaussinoPreRelease.LHCb.disabled = False
+gaussinoPreRelease.Gaudi.version = 'v36r4'
+gaussinoPreRelease.Gaudi.disabled = True
+gaussinoPreRelease.LHCb.version = 'v53r7'
+gaussinoPreRelease.LHCb.disabled = True
+gaussinoPreRelease.Detector.version = 'v1r0'
+gaussinoPreRelease.Detector.disabled = True
 gaussinoPreRelease.Geant4.version = 'Sim10'
 gaussinoPreRelease.Geant4.disabled = False
 gaussinoPreRelease.Geant4.checkout_opts['merges'] = [
     'all', 'label=lhcb-gaussino-prerelease'
 ]
-gaussinoPreRelease.Run2Support.version = 'HEAD'
-gaussinoPreRelease.Run2Support.disabled = False
+gaussinoPreRelease.Run2Support.version = 'v2r1'
+gaussinoPreRelease.Run2Support.disabled = True
 gaussinoPreRelease.platforms = GONGRELEASE_PLATFORMS
 slots.append(gaussinoPreRelease)