diff --git a/source/common/version/BUILD b/source/common/version/BUILD
index c5bcc2cbbcd09..da39bf367b3e0 100644
--- a/source/common/version/BUILD
+++ b/source/common/version/BUILD
@@ -22,7 +22,12 @@ genrule(
     name = "generate_api_version_number",
     srcs = ["//:API_VERSION.txt"],
     outs = ["api_version_number.h"],
-    cmd = """./$(location //tools/api_versioning:generate_api_version_header_bin) $< >$@""",
+    cmd = """
+    PYPATH=$$(realpath $$(dirname $(PYTHON3)))
+    export PATH=$$PYPATH:$$PATH
+    ./$(location //tools/api_versioning:generate_api_version_header_bin) $< >$@
+    """,
+    toolchains = ["@rules_python//python:current_py_toolchain"],
     tools = ["//tools/api_versioning:generate_api_version_header_bin"],
     visibility = ["//visibility:private"],
 )