diff --git a/acceptance.bats b/acceptance.bats
index d2366ad..1452c0a 100755
--- a/acceptance.bats
+++ b/acceptance.bats
@@ -12,6 +12,12 @@
   [ "$output" = "The document stdin contains a valid ReplicationController" ]
 }
 
+@test "Pass when parsing a valid Kubernetes config YAML file explicitly on stdin" {
+  run bash -c "cat fixtures/valid.yaml | kubeval -"
+  [ "$status" -eq 0 ]
+  [ "$output" = "The document stdin contains a valid ReplicationController" ]
+}
+
 @test "Pass when parsing a valid Kubernetes config JSON file" {
   run kubeval fixtures/valid.json
   [ "$status" -eq 0 ]
diff --git a/cmd/root.go b/cmd/root.go
index 615df70..6c460c8 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -40,7 +40,8 @@ var RootCmd = &cobra.Command{
 			}
 		}
 		// We detect whether we have anything on stdin to process if we have no arguments
-		if len(args) < 1 && !windowsStdinIssue && ((stat.Mode() & os.ModeCharDevice) == 0) {
+		// or if the argument is a -
+		if (len(args) < 1 || args[0] == "-") && !windowsStdinIssue && ((stat.Mode() & os.ModeCharDevice) == 0) {
 			var buffer bytes.Buffer
 			scanner := bufio.NewScanner(os.Stdin)
 			for scanner.Scan() {
diff --git a/glide.lock b/glide.lock
index e0f2fab..8354638 100644
--- a/glide.lock
+++ b/glide.lock
@@ -1,19 +1,20 @@
 hash: a8f1c32432725d048acd212267b87ac65a45259a64492371e95ff9357458098c
-updated: 2018-02-24T10:45:58.9108918Z
+updated: 2018-08-21T13:34:31.8946956+01:00
 imports:
 - name: github.com/fatih/color
-  version: 507f6050b8568533fb3f5504de8e5205fa62a114
+  version: 5b77d2a35fb0ede96d138fc9a99f5c9b6aef11b4
 - name: github.com/fsnotify/fsnotify
-  version: 4da3e2cfbabc9f751898f250b49f2439785783a1
+  version: c2828203cd70a50dcccfb2761f8b1f8ceef9a8e9
 - name: github.com/hashicorp/errwrap
-  version: 7554cd9344cec97297fa6649b055a8c98c2a1e55
+  version: d6c0cd88035724dd42e0f335ae30161c20575ecc
 - name: github.com/hashicorp/go-multierror
-  version: 83588e72410abfbe4df460eeb6f30841ae47d4c4
+  version: 3d5d8f294aa03d8e98859feac328afbdf1ae0703
 - name: github.com/hashicorp/hcl
-  version: 68e816d1c783414e79bc65b3994d9ab6b0a722ab
+  version: ef8a98b0bbce4a65b5aa4c368430a80ddc533168
   subpackages:
   - hcl/ast
   - hcl/parser
+  - hcl/printer
   - hcl/scanner
   - hcl/strconv
   - hcl/token
@@ -23,44 +24,44 @@ imports:
 - name: github.com/inconshreveable/mousetrap
   version: 76626ae9c91c4f2a10f34cad8ce83ea42c93bb75
 - name: github.com/magiconair/properties
-  version: 8d7837e64d3c1ee4e54a880c5a920ab4316fc90a
+  version: c2353362d570a7bfa228149c62842019201cfb71
 - name: github.com/mattn/go-colorable
-  version: 5411d3eea5978e6cdc258b30de592b60df6aba96
+  version: efa589957cd060542a26d2dd7832fd6a6c6c3ade
 - name: github.com/mattn/go-isatty
-  version: 57fdcb988a5c543893cc61bce354a6e24ab70022
+  version: 6ca4dbf54d38eea1a992b3c722a76a5d1c4cb25c
 - name: github.com/mitchellh/mapstructure
-  version: d0303fe809921458f417bcf828397a65db30a7e4
+  version: f15292f7a699fcc1a38a80977f80a046874ba8ac
 - name: github.com/pelletier/go-toml
-  version: 1d6b12b7cb290426e27e6b4e38b89fcda3aeef03
+  version: c2dbbc24a97911339e01bda0b8cabdbd8f13b602
 - name: github.com/spf13/afero
-  version: ee1bd8ee15a1306d1f9201acc41ef39cd9f99a1b
+  version: 787d034dfe70e44075ccc060d346146ef53270ad
   subpackages:
   - mem
 - name: github.com/spf13/cast
-  version: acbeb36b902d72a7a4c18e8f3241075e7ab763e4
+  version: 8965335b8c7107321228e3e3702cab9832751bac
 - name: github.com/spf13/cobra
-  version: b78744579491c1ceeaaa3b40205e56b0591b93a3
+  version: ff0d02e8555041edecbd0ce27f32c6ea4b214483
 - name: github.com/spf13/jwalterweatherman
-  version: 12bd96e66386c1960ab0f74ced1362f66f552f7b
+  version: 14d3d4c518341bea657dd8a226f5121c0ff8c9f2
 - name: github.com/spf13/pflag
-  version: 7aff26db30c1be810f9de5038ec5ef96ac41fd7c
+  version: d929dcbb10863323c436af3cf76cb16a6dfc9b29
 - name: github.com/spf13/viper
-  version: 25b30aa063fc18e48662b86996252eabdcf2f0c7
+  version: 907c19d40d9a6c9bb55f040ff4ae45271a4754b9
 - name: github.com/xeipuuv/gojsonpointer
-  version: 6fe8760cad3569743d51ddbb243b26f8456742dc
+  version: 4e3ac2762d5f479393488629ee9370b50873b3a6
 - name: github.com/xeipuuv/gojsonreference
-  version: e02fc20de94c78484cd5ffb007f8af96be030a45
+  version: bd5ef7bd5415a7ac448318e64f11a24cd21e594b
 - name: github.com/xeipuuv/gojsonschema
-  version: 3f523f4c14b6e925da10475eb0447c2f28614aac
+  version: da425ebb7609ba06a0f395fc8a254d1c303364a0
 - name: golang.org/x/sys
-  version: 1e2299c37cc91a509f1b12369872d27be0ce98a6
+  version: 4ea2f632f6e912459fe60b26b1749377f0d889d5
   subpackages:
   - unix
 - name: golang.org/x/text
-  version: 1cbadb444a806fd9430d14ad08967ed91da4fa0a
+  version: 6e3c4e7365ddcc329f090f96e4348398f6310088
   subpackages:
   - transform
   - unicode/norm
 - name: gopkg.in/yaml.v2
-  version: eb3733d160e74a9c7e442f435eb3bea458e1d19f
+  version: 5420a8b6744d3b0345ab293f6fcba19c978f1183
 testImports: []