diff --git a/VERSION b/VERSION
index f61b636189f1a49d8fc714a3a3ff081169388207..6630b191eeab90f86c2ff9d96fcf0f432831e44e 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-29.0~beta
+29.0+dev
diff --git a/opam b/opam
index 53586a75eff6edbf6c4346ed6e60ed057bad6c33..4523b2fc51aa43dfae17a61f3765c16310713ed8 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: "29.0~beta"
+version: "29.0+dev"
 description:"""
 Frama-C gathers several analysis techniques in a single collaborative
 framework, based on analyzers (called "plug-ins") that can build upon the
diff --git a/tools/hdrck/frama-c-hdrck.opam b/tools/hdrck/frama-c-hdrck.opam
index eb9432541772260fb7a04b274b4599d72ad9e549..9ac4b153329252440f5f2bb8a33cd2073d061790 100644
--- a/tools/hdrck/frama-c-hdrck.opam
+++ b/tools/hdrck/frama-c-hdrck.opam
@@ -1,7 +1,7 @@
 opam-version: "2.0"
 name: "frama-c-hdrck"
 synopsis: "Frama-C header check tool"
-version: "29.0"
+version: "29.0+dev"
 description:"""
 Performs all checks related to file headers as required by the Frama-C
 continuous integration.
diff --git a/tools/lint/frama-c-lint.opam b/tools/lint/frama-c-lint.opam
index ca8f52c3bfec4b4d1ce8c1829059a4ef2c5053c0..53ae18b3a27cc0de7b931a9f5ca9d2ea0282c725 100644
--- a/tools/lint/frama-c-lint.opam
+++ b/tools/lint/frama-c-lint.opam
@@ -1,7 +1,7 @@
 opam-version: "2.0"
 name: "frama-c-lint"
 synopsis: "Frama-C lint tool"
-version: "29.0"
+version: "29.0+dev"
 description:"""
 Performs all checks related to source code formatting as required by the Frama-C
 continuous integration. Namely: OCP-indent for ML files, clang-format for E-ACSL