diff --git a/data/stacks/Online/v7r9.yml b/data/stacks/Online/v7r9.yml
new file mode 100644
index 0000000000000000000000000000000000000000..20ea93157c416ce50efb70e89dc01b930d9f979a
--- /dev/null
+++ b/data/stacks/Online/v7r9.yml
@@ -0,0 +1,21 @@
+type: lhcbcmake
+
+projects:
+  Gaudi:   v36r0
+  LHCb:    v53r0
+  Online:  v7r9
+
+toolchain:
+  type:    LCG
+  version: 100
+
+platforms:
+  - x86_64_v3-centos7-gcc10-opt
+  - x86_64_v2-centos7-gcc10-opt
+  - x86_64_v2-centos7-gcc10-dbg
+  - x86_64_v2-centos7-gcc10-do0
+  - x86_64_v2-centos7-clang11-opt
+  - x86_64_v2-centos7-clang11-dbg
+
+tags:
+  - Run3