diff --git a/bazel/toolchains/ci_deps.bzl b/bazel/toolchains/ci_deps.bzl
index ec23f6802..f1b79b12e 100644
--- a/bazel/toolchains/ci_deps.bzl
+++ b/bazel/toolchains/ci_deps.bzl
@@ -271,7 +271,7 @@ def _buf_deps():
         build_file_content = """exports_files(["buf"], visibility = ["//visibility:public"])""",
         urls = [
             "https://cdn.confidential.cloud/constellation/cas/sha256/8a94dce37ce72c89c82e6c4baf77797a2a4a2eef3b02a7f39b40ef7fb0f39f94",
-            "https://github.com/bufbuild/buf/releases/download/v1.31.0/buf-Linux-x86_64.tar.gz",
+            "https://github.com/bufbuild/buf/releases/download/v1.34.0/buf-Linux-x86_64.tar.gz",
         ],
         type = "tar.gz",
         sha256 = "8a94dce37ce72c89c82e6c4baf77797a2a4a2eef3b02a7f39b40ef7fb0f39f94",
@@ -282,7 +282,7 @@ def _buf_deps():
         build_file_content = """exports_files(["buf"], visibility = ["//visibility:public"])""",
         urls = [
             "https://cdn.confidential.cloud/constellation/cas/sha256/ed435fe40a8b719354f746261cf9dbfcbfa4165fdb600e2f324ad8f6fe488dd2",
-            "https://github.com/bufbuild/buf/releases/download/v1.31.0/buf-Linux-aarch64.tar.gz",
+            "https://github.com/bufbuild/buf/releases/download/v1.34.0/buf-Linux-aarch64.tar.gz",
         ],
         type = "tar.gz",
         sha256 = "ed435fe40a8b719354f746261cf9dbfcbfa4165fdb600e2f324ad8f6fe488dd2",
@@ -293,7 +293,7 @@ def _buf_deps():
         build_file_content = """exports_files(["buf"], visibility = ["//visibility:public"])""",
         urls = [
             "https://cdn.confidential.cloud/constellation/cas/sha256/a88b4ccf6aee4f7d525917bf4636253faa7c13b8f45c4c732a7fea55441ef835",
-            "https://github.com/bufbuild/buf/releases/download/v1.31.0/buf-Darwin-x86_64.tar.gz",
+            "https://github.com/bufbuild/buf/releases/download/v1.34.0/buf-Darwin-x86_64.tar.gz",
         ],
         type = "tar.gz",
         sha256 = "a88b4ccf6aee4f7d525917bf4636253faa7c13b8f45c4c732a7fea55441ef835",
@@ -304,7 +304,7 @@ def _buf_deps():
         build_file_content = """exports_files(["buf"], visibility = ["//visibility:public"])""",
         urls = [
             "https://cdn.confidential.cloud/constellation/cas/sha256/7519df87d3f681d5348f00e96215543edc55c62d821527056b5d8201d8982f28",
-            "https://github.com/bufbuild/buf/releases/download/v1.31.0/buf-Darwin-arm64.tar.gz",
+            "https://github.com/bufbuild/buf/releases/download/v1.34.0/buf-Darwin-arm64.tar.gz",
         ],
         type = "tar.gz",
         sha256 = "7519df87d3f681d5348f00e96215543edc55c62d821527056b5d8201d8982f28",