diff --git a/Version.txt b/Version.txt
index 90a08d0df4..3dc3942064 100644
--- a/Version.txt
+++ b/Version.txt
@@ -1,3 +1,3 @@
-OR_TOOLS_MAJOR=9
-OR_TOOLS_MINOR=9
+OR_TOOLS_MAJOR=10
+OR_TOOLS_MINOR=0
 #PRE_RELEASE=YES
diff --git a/ortools/base/BUILD.bazel b/ortools/base/BUILD.bazel
index a5dbaa5e45..d9a81fdb87 100644
--- a/ortools/base/BUILD.bazel
+++ b/ortools/base/BUILD.bazel
@@ -50,8 +50,8 @@ cc_library(
         "version.h",
     ],
     copts = [
-        "-DOR_TOOLS_MAJOR=9",
-        "-DOR_TOOLS_MINOR=9",
+        "-DOR_TOOLS_MAJOR=10",
+        "-DOR_TOOLS_MINOR=0",
         "-DOR_TOOLS_PATCH=9999",
     ],
     linkopts = select({