diff --git a/bazel/repository_locations.bzl b/bazel/repository_locations.bzl
index 54c42457..f40f6003 100644
--- a/bazel/repository_locations.bzl
+++ b/bazel/repository_locations.bzl
@@ -118,9 +118,9 @@ REPOSITORY_LOCATIONS_SPEC = dict(
         project_name = "OpenTelemetry Proto",
         project_desc = "Language Independent Interface Types For OpenTelemetry",
         project_url = "https://github.com/open-telemetry/opentelemetry-proto",
-        version = "1.3.2",
-        sha256 = "c069c0d96137cf005d34411fa67dd3b6f1f8c64af1e7fb2fe0089a41c425acd7",
-        release_date = "2024-06-28",
+        version = "1.4.0",
+        sha256 = "53cd32cedb27762ea2060a9c8d83e4b822de13d73b5d5d37a2db3cf55018d694",
+        release_date = "2024-11-20",
         strip_prefix = "opentelemetry-proto-{version}",
         urls = ["https://github.com/open-telemetry/opentelemetry-proto/archive/v{version}.tar.gz"],
         use_category = ["api"],