diff --git a/WORKSPACE b/WORKSPACE
index 94f9c4b..bd02a2b 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -1132,10 +1132,9 @@
 java_runtime(name = 'runtime', srcs =  glob(['**']), visibility = ['//visibility:public'])
 exports_files(["WORKSPACE"], visibility = ["//visibility:public"])
 """,
+    sha256 = "529c99841d69e11a85aea967ccfb9d0fd40b98c5b68dbe1d059002655e0a9c13",
     strip_prefix = "zulu12.2.3-ca-jdk12.0.1-linux_x64",
-    urls = [
-        "https://mirror.bazel.build/openjdk/azul-zulu12.2.3-ca-jdk12.0.1/zulu12.2.3-ca-jdk12.0.1-linux_x64.tar.gz",
-    ],
+    urls = ["https://mirror.bazel.build/openjdk/azul-zulu12.2.3-ca-jdk12.0.1/zulu12.2.3-ca-jdk12.0.1-linux_x64.tar.gz"],
 )
 
 # This must be kept in sync with src/test/shell/bazel/testdata/jdk_http_archives.
@@ -1145,10 +1144,9 @@
 java_runtime(name = 'runtime', srcs =  glob(['**']), visibility = ['//visibility:public'])
 exports_files(["WORKSPACE"], visibility = ["//visibility:public"])
 """,
+    sha256 = "67ca9d285056132ebb19fa237a14affda52132142e1171fe1c20e18974b3b8a5",
     strip_prefix = "zulu12.2.3-ca-jdk12.0.1-macosx_x64",
-    urls = [
-        "https://mirror.bazel.build/openjdk/azul-zulu12.2.3-ca-jdk12.0.1/zulu12.2.3-ca-jdk12.0.1-macosx_x64.tar.gz",
-    ],
+    urls = ["https://mirror.bazel.build/openjdk/azul-zulu12.2.3-ca-jdk12.0.1/zulu12.2.3-ca-jdk12.0.1-macosx_x64.tar.gz"],
 )
 
 # This must be kept in sync with src/test/shell/bazel/testdata/jdk_http_archives.
@@ -1158,10 +1156,9 @@
 java_runtime(name = 'runtime', srcs =  glob(['**']), visibility = ['//visibility:public'])
 exports_files(["WORKSPACE"], visibility = ["//visibility:public"])
 """,
+    sha256 = "cf28404c23c3aa1115363ba6e796c30580a768e1d7d6681a7d053e516008e00d",
     strip_prefix = "zulu12.2.3-ca-jdk12.0.1-win_x64",
-    urls = [
-        "https://mirror.bazel.build/openjdk/azul-zulu12.2.3-ca-jdk12.0.1/zulu12.2.3-ca-jdk12.0.1-win_x64.zip",
-    ],
+    urls = ["https://mirror.bazel.build/openjdk/azul-zulu12.2.3-ca-jdk12.0.1/zulu12.2.3-ca-jdk12.0.1-win_x64.zip"],
 )
 
 load("@io_bazel_skydoc//:setup.bzl", "skydoc_repositories")
diff --git a/src/test/shell/bazel/testdata/jdk_http_archives b/src/test/shell/bazel/testdata/jdk_http_archives
index dee71a8..ca2e7c8 100644
--- a/src/test/shell/bazel/testdata/jdk_http_archives
+++ b/src/test/shell/bazel/testdata/jdk_http_archives
@@ -191,26 +191,23 @@
 http_archive(
     name = "openjdk12_linux_archive",
     build_file_content = "java_runtime(name = 'runtime', srcs =  glob(['**']), visibility = ['//visibility:public'])",
+    sha256 = "529c99841d69e11a85aea967ccfb9d0fd40b98c5b68dbe1d059002655e0a9c13",
     strip_prefix = "zulu12.2.3-ca-jdk12.0.1-linux_x64",
-    urls = [
-        "https://mirror.bazel.build/openjdk/azul-zulu12.2.3-ca-jdk12.0.1/zulu12.2.3-ca-jdk12.0.1-linux_x64.tar.gz",
-    ],
+    urls = ["https://mirror.bazel.build/openjdk/azul-zulu12.2.3-ca-jdk12.0.1/zulu12.2.3-ca-jdk12.0.1-linux_x64.tar.gz"],
 )
 # This must be kept in sync with the top-level WORKSPACE file.
 http_archive(
     name = "openjdk12_darwin_archive",
     build_file_content = "java_runtime(name = 'runtime', srcs =  glob(['**']), visibility = ['//visibility:public'])",
+    sha256 = "67ca9d285056132ebb19fa237a14affda52132142e1171fe1c20e18974b3b8a5",
     strip_prefix = "zulu12.2.3-ca-jdk12.0.1-macosx_x64",
-    urls = [
-        "https://mirror.bazel.build/openjdk/azul-zulu12.2.3-ca-jdk12.0.1/zulu12.2.3-ca-jdk12.0.1-macosx_x64.tar.gz",
-    ],
+    urls = ["https://mirror.bazel.build/openjdk/azul-zulu12.2.3-ca-jdk12.0.1/zulu12.2.3-ca-jdk12.0.1-macosx_x64.tar.gz"],
 )
 # This must be kept in sync with the top-level WORKSPACE file.
 http_archive(
     name = "openjdk12_windows_archive",
     build_file_content = "java_runtime(name = 'runtime', srcs =  glob(['**']), visibility = ['//visibility:public'])",
+    sha256 = "cf28404c23c3aa1115363ba6e796c30580a768e1d7d6681a7d053e516008e00d",
     strip_prefix = "zulu12.2.3-ca-jdk12.0.1-win_x64",
-    urls = [
-        "https://mirror.bazel.build/openjdk/azul-zulu12.2.3-ca-jdk12.0.1/zulu12.2.3-ca-jdk12.0.1-win_x64.zip",
-    ],
+    urls = ["https://mirror.bazel.build/openjdk/azul-zulu12.2.3-ca-jdk12.0.1/zulu12.2.3-ca-jdk12.0.1-win_x64.zip"],
 )