diff --git a/third_party/go/repositories.bzl b/third_party/go/repositories.bzl
index 39fbda0..dd79302 100644
--- a/third_party/go/repositories.bzl
+++ b/third_party/go/repositories.bzl
@@ -700,6 +700,12 @@
         sum = "h1:il4pi2iOP5NRkBgnZH3n0GDqSCNEJ/QIRJrCAfU5h38=",
     )
     go_repository(
+        name = "com_github_google_certificate_transparency_go",
+        importpath = "github.com/google/certificate-transparency-go",
+        version = "v1.1.0",
+        sum = "h1:10MlrYzh5wfkToxWI4yJzffsxLfxcEDlOATMx/V9Kzw=",
+    )
+    go_repository(
         name = "com_github_google_go_cmp",
         importpath = "github.com/google/go-cmp",
         version = "v0.4.0",
diff --git a/third_party/go/shelf.pb.text b/third_party/go/shelf.pb.text
index ead136d..6eb9603 100644
--- a/third_party/go/shelf.pb.text
+++ b/third_party/go/shelf.pb.text
@@ -1077,6 +1077,13 @@
   semver: "v0.36.1-0.20200623171404-8450c56c21bc"
 >
 entry: <
+  import_path: "github.com/google/certificate-transparency-go"
+  version: "v1.1.0"
+  bazel_name: "com_github_google_certificate_transparency_go"
+  sum: "h1:10MlrYzh5wfkToxWI4yJzffsxLfxcEDlOATMx/V9Kzw="
+  semver: "v1.1.0"
+>
+entry: <
   import_path: "github.com/google/go-cmp"
   version: "v0.4.0"
   bazel_name: "com_github_google_go_cmp"