diff --git a/go.mod b/go.mod
index 252511da6..971d17f91 100644
--- a/go.mod
+++ b/go.mod
@@ -19,7 +19,7 @@ require (
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.3.0
 	github.com/hashicorp/boundary/api v0.0.10
 	github.com/hashicorp/boundary/sdk v0.0.4
-	github.com/hashicorp/cap v0.0.0-20210408110729-0dd65efe5473
+	github.com/hashicorp/cap v0.0.0-20210517201257-8ce007dee2fc
 	github.com/hashicorp/dbassert v0.0.0-20200930125617-6218396928df
 	github.com/hashicorp/errwrap v1.1.0
 	github.com/hashicorp/go-bexpr v0.1.7
diff --git a/go.sum b/go.sum
index 90af519ce..17bc2c97a 100644
--- a/go.sum
+++ b/go.sum
@@ -438,8 +438,8 @@ github.com/grpc-ecosystem/grpc-gateway v1.9.5/go.mod h1:vNeuVxBJEsws4ogUvrchl83t
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.3.0 h1:IvO4FbbQL6n3v3M1rQNobZ61SGL0gJLdvKA5KETM7Xs=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.3.0/go.mod h1:d2gYTOTUQklu06xp0AJYYmRdTVU1VKrqhkYfYag2L08=
 github.com/hailocab/go-hostpool v0.0.0-20160125115350-e80d13ce29ed/go.mod h1:tMWxXQ9wFIaZeTI9F+hmhFiGpFmhOHzyShyFUhRm0H4=
-github.com/hashicorp/cap v0.0.0-20210408110729-0dd65efe5473 h1:qEikB8/ychrgsll9feuGjVLt0qo5oktfyTWi7BLsUrg=
-github.com/hashicorp/cap v0.0.0-20210408110729-0dd65efe5473/go.mod h1:hjMYKmFvk9AOL69NbqrahCHoMPZHRWqvRcdr7ciPU7g=
+github.com/hashicorp/cap v0.0.0-20210517201257-8ce007dee2fc h1:RT7WTH/ekTTMY6bKTOWD+4FizU1pONzqHhUy3HBu44Q=
+github.com/hashicorp/cap v0.0.0-20210517201257-8ce007dee2fc/go.mod h1:hjMYKmFvk9AOL69NbqrahCHoMPZHRWqvRcdr7ciPU7g=
 github.com/hashicorp/consul/api v1.1.0/go.mod h1:VmuI/Lkw1nC05EYQWNKwWGbkg+FbDBtguAZLlVdkD9Q=
 github.com/hashicorp/consul/api v1.3.0/go.mod h1:MmDNSzIMUjNpY/mQ398R4bk2FnqQLoPndWW5VkKPlCE=
 github.com/hashicorp/consul/sdk v0.1.1/go.mod h1:VKf9jXwCTEY1QZP2MOLRhb5i/I/ssyNV1vwHyQBF0x8=