diff --git a/.bazelversion b/.bazelversion
new file mode 100644
index 00000000000..fcdb2e109f6
--- /dev/null
+++ b/.bazelversion
@@ -0,0 +1 @@
+4.0.0
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 0e7e70d0913..df29aa65c9d 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -220,6 +220,7 @@ WORKSPACE @BenHenning
 *.bzl @BenHenning
 *.bazel @BenHenning
 .bazelrc @BenHenning
+.bazelversion @BenHenning
 /tools/android/ @BenHenning
 
 # License texts.