diff --git a/api/bazel/repositories.bzl b/api/bazel/repositories.bzl
index acd03fe0adf6..3e24566a9b47 100644
--- a/api/bazel/repositories.bzl
+++ b/api/bazel/repositories.bzl
@@ -51,6 +51,9 @@ def api_dependencies():
         name = "com_github_bufbuild_buf",
         build_file_content = BUF_BUILD_CONTENT,
     )
+    external_http_archive(
+        name = "dev_cel",
+    )
 
     external_http_archive(
         name = "com_github_chrusty_protoc_gen_jsonschema",
diff --git a/api/bazel/repository_locations.bzl b/api/bazel/repository_locations.bzl
index 444d1061968a..449834983a6e 100644
--- a/api/bazel/repository_locations.bzl
+++ b/api/bazel/repository_locations.bzl
@@ -39,9 +39,9 @@ REPOSITORY_LOCATIONS_SPEC = dict(
         project_desc = "xDS API Working Group (xDS-WG)",
         project_url = "https://github.com/cncf/xds",
         # During the UDPA -> xDS migration, we aren't working with releases.
-        version = "6b7cb9e61ad79c99765a1dea2bede517d1b7db3e",
-        sha256 = "8671884372d3af43478d6de3e05a653fffdbbe1acc6e827680e2125a0120ccd2",
-        release_date = "2024-03-22",
+        version = "0c46c01016dc5c9aeddf6c745a230c32bf62841d",
+        sha256 = "bc1626f5afe5313bac279aeca5761e276abb60c9a1ec9c187c35bfd259f4c40c",
+        release_date = "2024-03-29",
         strip_prefix = "xds-{version}",
         urls = ["https://github.com/cncf/xds/archive/{version}.tar.gz"],
         use_category = ["api"],
@@ -151,6 +151,17 @@ REPOSITORY_LOCATIONS_SPEC = dict(
         use_category = ["build"],
         release_date = "2023-05-30",
     ),
+    dev_cel = dict(
+        project_name = "CEL",
+        project_desc = "Common Expression Language -- specification and binary representation",
+        project_url = "https://github.com/google/cel-spec",
+        strip_prefix = "cel-spec-{version}",
+        sha256 = "3ee09eb69dbe77722e9dee23dc48dc2cd9f765869fcf5ffb1226587c81791a0b",
+        version = "0.15.0",
+        urls = ["https://github.com/google/cel-spec/archive/v{version}.tar.gz"],
+        use_category = ["api"],
+        release_date = "2024-03-27",
+    ),
     rules_proto_grpc = dict(
         project_name = "rules_proto_grpc",
         project_desc = "Bazel rules for building Protobuf and gRPC code and libraries from proto_library targets ",