diff --git a/VERSION b/VERSION
index a0d6856dbeecfde64269587cdef95a06b5edc878..f4831f63bed9915b0e23423ddb031832c7c394b5 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-27.0
+27.0~beta
diff --git a/opam b/opam
index 91fb16592886f5007c8f93e9641852200f070b25..89620c900f4374b99a222e897804bdfafa81187b 100644
--- a/opam
+++ b/opam
@@ -1,7 +1,7 @@
 opam-version: "2.0"
 name: "frama-c"
 synopsis: "Platform dedicated to the analysis of source code written in C"
-version: "27.0"
+version: "27.0~beta"
 description:"""
 Frama-C gathers several analysis techniques in a single collaborative
 framework, based on analyzers (called "plug-ins") that can build upon the
@@ -70,7 +70,7 @@ authors: [
 homepage: "https://frama-c.com/"
 license: "LGPL-2.1-only"
 dev-repo: "git+https://git.frama-c.com/pub/frama-c.git"
-doc: "http://frama-c.com/download/user-manual-27.0-Cobalt.pdf"
+doc: "http://frama-c.com/download/user-manual-27.0-beta-Cobalt.pdf"
 bug-reports: "https://git.frama-c.com/pub/frama-c/issues"
 tags: [
   "deductive"