diff --git a/.gitmodules b/.gitmodules
index 87654b7e..cc8ff5c8 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -680,3 +680,6 @@
 [submodule "vendor/grammars/language-babel"]
 	path = vendor/grammars/language-babel
 	url = https://github.com/gandm/language-babel
+[submodule "vendor/grammars/UrWeb-Language-Definition"]
+	path = vendor/grammars/UrWeb-Language-Definition
+	url = https://github.com/gwalborn/UrWeb-Language-Definition.git
diff --git a/grammars.yml b/grammars.yml
index 2a7a89e2..dc09cd3a 100644
--- a/grammars.yml
+++ b/grammars.yml
@@ -140,6 +140,8 @@ vendor/grammars/TXL/:
 - source.txl
 vendor/grammars/Textmate-Gosu-Bundle:
 - source.gosu.2
+vendor/grammars/UrWeb-Language-Definition:
+- source.ur
 vendor/grammars/VBDotNetSyntax:
 - source.vbnet
 vendor/grammars/Vala-TMBundle:
diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 0de559ee..daec47d4 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -3475,6 +3475,17 @@ UnrealScript:
   tm_scope: source.java
   ace_mode: java
 
+UrWeb:
+  type: programming
+  aliases:
+  - Ur/Web
+  - Ur
+  extensions:
+  - .ur
+  - .urs
+  tm_scope: source.ur
+  ace_mode: text
+
 VCL:
   group: Perl
   type: programming
diff --git a/vendor/grammars/UrWeb-Language-Definition b/vendor/grammars/UrWeb-Language-Definition
new file mode 160000
index 00000000..cd47cc78
--- /dev/null
+++ b/vendor/grammars/UrWeb-Language-Definition
@@ -0,0 +1 @@
+Subproject commit cd47cc78918244b9cc36f57f5397a97a5affce4e