diff --git a/CMakeLists.txt b/CMakeLists.txt
index 10016e18c1410e6f2c5ee268fd30e96e2627b82d..63763db5552dbf7eff695abf3036879d3b4121e5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,12 +1,10 @@
 CMAKE_MINIMUM_REQUIRED(VERSION 2.8.5)
 
-# NO_NINJA : Geant4 build fails with Ninja
-
 set(GEANT4_SRCS_REPOSITORY https://gitlab.cern.ch/lhcb/Geant4-srcs.git CACHE STRING "Repository for Geant4 sources")
 set(GEANT4FILES_VERSION v106r1 CACHE STRING "Version for Geant4Files to match Geant4-src version")
 
 find_package(GaudiProject)
-gaudi_project(Geant4 v106r2p2
+gaudi_project(Geant4 v106r2p3
               DATA Geant4Files VERSION ${GEANT4FILES_VERSION})
 
 # FIXME: hack for compatibility with CMT build
diff --git a/Geant4/G4config/CMakeLists.txt b/Geant4/G4config/CMakeLists.txt
index dd3b6d73bc817cc5fd86e49034d1b5ec3ef2832a..86c744c981633220e2e4b62675ea36c72e7b7bc2 100644
--- a/Geant4/G4config/CMakeLists.txt
+++ b/Geant4/G4config/CMakeLists.txt
@@ -57,7 +57,7 @@ ExternalProject_Add(Geant4
               -DGEANT4_USE_NETWORKVRML=ON
               -DGEANT4_USE_NETWORKDAWN=ON
               -DGEANT4_USE_INVENTOR=OFF
-              -DCMAKE_INSTALL_PREFIX=${CMAKE_SOURCE_DIR}/InstallArea/$ENV{CMTCONFIG}
+              -DCMAKE_INSTALL_PREFIX=${CMAKE_SOURCE_DIR}/InstallArea/${BINARY_TAG}
               -DCMAKE_INSTALL_LIBDIR=lib
               -DGEANT4_INSTALL_DATADIR=${G4DATA}
               -DGEANT4_BUILD_VERBOSE_CODE=${G4VERBOSE}
diff --git a/ReleaseNotes/v106r2p3.md b/ReleaseNotes/v106r2p3.md
new file mode 100644
index 0000000000000000000000000000000000000000..cbd32acf594591193529b4b98a2d341cf5c92e9c
--- /dev/null
+++ b/ReleaseNotes/v106r2p3.md
@@ -0,0 +1,11 @@
+2021-01-19 Geant4 v106r2p3
+===
+This release is based on `GEANT4 r10.6.2`, uses `LCG 97a` and `Geant4Files v106r1`.
+
+This version is released on `Sim10` branch.
+
+## Latest Changes
+
+#### General
+**Rogue symbols fix in Geant4-srcs
+**Minor fixes to CMake
diff --git a/toolchain.cmake b/toolchain.cmake
index 797c20d48ddc6aa174bdca9fc2d4a6329dd965ab..45a254fa3bfc57fff9882eec7fdc105629998468 100644
--- a/toolchain.cmake
+++ b/toolchain.cmake
@@ -23,7 +23,8 @@ if(NOT CMAKE_SOURCE_DIR MATCHES "CMakeTmp")
     # - ninja (it requires LD_LIBRARY_PATH set to run)
     # - Gaudi (we do not want to use it from LCG)
     # - xenv (conflicts with the version in the build environment)
-    list(FILTER CMAKE_PREFIX_PATH EXCLUDE REGEX "(LCG_|lcg/nightlies).*(ninja|Gaudi|xenv)")
+    # - git (requires a special environment provided only by LCG views)
+    list(FILTER CMAKE_PREFIX_PATH EXCLUDE REGEX "(LCG_|lcg/nightlies).*(ninja|Gaudi|xenv|git)/")
   endif()
 
 endif()