diff --git a/MODULE.bazel b/MODULE.bazel
index 67761b5a7f..ea9c98d758 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -5,7 +5,7 @@
 # For more details, please check https://github.com/bazelbuild/bazel/issues/18958
 ###############################################################################
 
-OR_TOOLS_VERSION = "9.12"
+OR_TOOLS_VERSION = "9.13"
 
 module(
     name = "or-tools",
diff --git a/Version.txt b/Version.txt
index e96e4186e4..78863f2d95 100644
--- a/Version.txt
+++ b/Version.txt
@@ -1,3 +1,3 @@
 OR_TOOLS_MAJOR=9
-OR_TOOLS_MINOR=12
+OR_TOOLS_MINOR=13
 #PRE_RELEASE=YES
diff --git a/ortools/base/BUILD.bazel b/ortools/base/BUILD.bazel
index e42f4f058f..ee1f4835f8 100644
--- a/ortools/base/BUILD.bazel
+++ b/ortools/base/BUILD.bazel
@@ -50,7 +50,7 @@ cc_library(
     ],
     copts = [
         "-DOR_TOOLS_MAJOR=9",
-        "-DOR_TOOLS_MINOR=12",
+        "-DOR_TOOLS_MINOR=13",
         "-DOR_TOOLS_PATCH=9999",
     ],
     linkopts = select({