diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 030e46e883..84109286c1 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -7392,6 +7392,16 @@ Vyper:
   ace_mode: text
   tm_scope: source.vyper
   language_id: 1055641948
+WDL:
+  aliases:
+  - Workflow Description Language
+  type: programming
+  color: "#42f1f4"
+  extensions:
+  - ".wdl"
+  tm_scope: source.wdl
+  ace_mode: text
+  language_id: 374521672
 Wavefront Material:
   type: data
   extensions:
@@ -8161,14 +8171,6 @@ sed:
   ace_mode: text
   tm_scope: source.sed
   language_id: 847830017
-wdl:
-  type: programming
-  color: "#42f1f4"
-  extensions:
-  - ".wdl"
-  tm_scope: source.wdl
-  ace_mode: text
-  language_id: 374521672
 wisp:
   type: programming
   ace_mode: clojure
diff --git a/samples/wdl/hello.wdl b/samples/WDL/hello.wdl
similarity index 100%
rename from samples/wdl/hello.wdl
rename to samples/WDL/hello.wdl
diff --git a/samples/wdl/ifs_in_scatters.wdl b/samples/WDL/ifs_in_scatters.wdl
similarity index 100%
rename from samples/wdl/ifs_in_scatters.wdl
rename to samples/WDL/ifs_in_scatters.wdl
diff --git a/samples/wdl/passingfiles.wdl b/samples/WDL/passingfiles.wdl
similarity index 100%
rename from samples/wdl/passingfiles.wdl
rename to samples/WDL/passingfiles.wdl
diff --git a/vendor/README.md b/vendor/README.md
index 31e903fe70..c99d85d3bb 100644
--- a/vendor/README.md
+++ b/vendor/README.md
@@ -576,6 +576,7 @@ This is a list of grammars that Linguist selects to provide syntax highlighting
 - **Volt:** [textmate/d.tmbundle](https://github.com/textmate/d.tmbundle)
 - **Vue:** [vuejs/vue-syntax-highlight](https://github.com/vuejs/vue-syntax-highlight)
 - **Vyper:** [davidhq/SublimeEthereum](https://github.com/davidhq/SublimeEthereum)
+- **WDL:** [broadinstitute/wdl-sublime-syntax-highlighter](https://github.com/broadinstitute/wdl-sublime-syntax-highlighter)
 - **Wavefront Material:** [Alhadis/language-wavefront](https://github.com/Alhadis/language-wavefront)
 - **Wavefront Object:** [Alhadis/language-wavefront](https://github.com/Alhadis/language-wavefront)
 - **Web Ontology Language:** [textmate/xml.tmbundle](https://github.com/textmate/xml.tmbundle)
@@ -639,6 +640,5 @@ This is a list of grammars that Linguist selects to provide syntax highlighting
 - **reStructuredText:** [Lukasa/language-restructuredtext](https://github.com/Lukasa/language-restructuredtext)
 - **robots.txt:** [Nixinova/NovaGrammars](https://github.com/Nixinova/NovaGrammars)
 - **sed:** [Alhadis/language-sed](https://github.com/Alhadis/language-sed)
-- **wdl:** [broadinstitute/wdl-sublime-syntax-highlighter](https://github.com/broadinstitute/wdl-sublime-syntax-highlighter)
 - **wisp:** [atom/language-clojure](https://github.com/atom/language-clojure)
 - **xBase:** [hernad/atom-language-harbour](https://github.com/hernad/atom-language-harbour)