diff --git a/tools/jarjar/jarjar.bzl b/tools/jarjar/jarjar.bzl
index 47af3a2..b37bc9d 100644
--- a/tools/jarjar/jarjar.bzl
+++ b/tools/jarjar/jarjar.bzl
@@ -79,6 +79,7 @@ _jarjar_library_attrs.update({
     "_jdk": attr.label(
         default = Label("@bazel_tools//tools/jdk:current_java_runtime"),
         providers = [java_common.JavaRuntimeInfo],
+        cfg = "exec",
     ),
 })
 
diff --git a/tools/javadoc/javadoc.bzl b/tools/javadoc/javadoc.bzl
index 8c8381a..79fbea1 100644
--- a/tools/javadoc/javadoc.bzl
+++ b/tools/javadoc/javadoc.bzl
@@ -186,6 +186,7 @@ If Android APIs are used, the API level to compile against to generate Javadoc.
         "_jdk": attr.label(
             default = Label("@bazel_tools//tools/jdk:current_java_runtime"),
             providers = [java_common.JavaRuntimeInfo],
+            cfg = "exec",
         ),
     },
     outputs = {"jar": "%{name}.jar"},