diff --git a/MooreSys/cmt/requirements b/MooreSys/cmt/requirements
index 2a37ce6b364a99514cb6236fc8618ab76018dc9e..8cf31d35a5331c0d7d5e92cb7822538452cd4582 100755
--- a/MooreSys/cmt/requirements
+++ b/MooreSys/cmt/requirements
@@ -1,5 +1,5 @@
 package MooreSys
-version v12r8g5
+version v12r8g6
 branches doc cmt
 
 #=======================================================
diff --git a/ReleaseNotes/v12r8g6.md b/ReleaseNotes/v12r8g6.md
new file mode 100644
index 0000000000000000000000000000000000000000..effbc385015276e2818a7f49d737dd2168d8bbd4
--- /dev/null
+++ b/ReleaseNotes/v12r8g6.md
@@ -0,0 +1,24 @@
+2025-01-22 Moore v12r8g6
+===
+
+This version uses
+Hlt [v13r9g4](../../../../Hlt/-/tags/v13r9g4),
+Phys [v12r5p2g2](../../../../Phys/-/tags/v12r5p2g2),
+Rec [v11r5p1g2](../../../../Rec/-/tags/v11r5p1g2),
+LHCb [v32r4p1g2](../../../../LHCb/-/tags/v32r4p1g2),
+Gaudi [v22r5](../../../../Gaudi/-/tags/v22r5) and
+LCG [61b](http://lcginfo.cern.ch/release/61b/) with ROOT 5.30.04.
+
+This version is released on `hlt2011-patches` branch. It is intended for patches to Moore in 2011 simulation worflows. Builds with gcc43 on slc5.
+Built relative to Moore [v12r8g5](../-/tags/v12r8g5), with the following changes:
+
+
+### Fixes ~"bug fix" ~workaround
+
+- Upstream project highlights :star:
+  - Use LHCb ParticlePropertySvc instead of Gaudi one, Phys!1103 (@cattanem)
+
+
+### Changes to tests ~testing
+
+- Update test to use TestFileDB and use a Sim10 input file, !4268 (@cattanem)
diff --git a/cmt/project.cmt b/cmt/project.cmt
index 9b6e4afee0c535bbc903942e3f858ac3ae2a74a6..466784556ce7befbf037052a66c3f1949419cff6 100755
--- a/cmt/project.cmt
+++ b/cmt/project.cmt
@@ -1,6 +1,6 @@
 project MOORE
 
-use HLT     HLT_v13r9g3
+use HLT     HLT_v13r9g4
 use LBCOM   LBCOM_v10r4p1g2
 
 container       MooreSys