diff --git a/types/alpm-definition.json b/types/alpm-definition.json
index 97ac24b1..bb2ed0f8 100644
--- a/types/alpm-definition.json
+++ b/types/alpm-definition.json
@@ -1,12 +1,12 @@
 {
   "$schema": "https://packageurl.org/schemas/purl-type-definition.schema-1.0.json",
-  "$id": "https://packageurl.org/types/github-definition.json",
+  "$id": "https://packageurl.org/types/alpm-definition.json",
   "type": "alpm",
   "type_name": "Arch Linux package",
   "description": "Arch Linux packages and other users of the libalpm/pacman package manager.",
   "repository": {
     "use_repository": true,
-    "note": "There is no default package repository; this should be implied either from the distro qualifiers key  or using a repository base url as  repository_url qualifiers key."
+    "note": "There is no default package repository; this should be implied either from the distro qualifiers key or using a repository base url as a repository_url qualifiers key."
   },
   "namespace_definition": {
     "requirement": "required",
@@ -18,13 +18,18 @@
     ]
   },
   "name_definition": {
-    "note": "The name is the package name. It is not case sensitive and must be lowercased.",
+    "requirement": "required",
+    "note": "The name is the package name. It is not case sensitive and must be lowercased. Any characters that are reserved in the PURL specification, such as '@', must be percent-encoded.",
     "case_sensitive": false,
-    "native_name": "name"
+    "native_name": "name",
+    "normalization_rules": [
+      "It is not case sensitive and must be lowercased."
+    ]
   },
   "version_definition": {
+    "requirement": "required",
     "native_name": "version",
-    "note": "The version is the version of the package as specified in vercmp(8) at (https://man.archlinux.org/man/vercmp.8#DESCRIPTION as part of alpm.",
+    "note": "The version of the package. The format must be valid for comparison by the vercmp(8) utility (see https://man.archlinux.org/man/vercmp.8).",
     "case_sensitive": true,
     "normalization_rules": [
       "normalize version as specified in vercmp(8) at https://man.archlinux.org/man/vercmp.8#DESCRIPTION as part of alpm."
@@ -36,11 +41,24 @@
       "requirement": "optional",
       "native_name": "arch",
       "description": "The arch is the qualifiers key for a package architecture."
+    },
+    {
+      "key": "distro",
+      "requirement": "optional",
+      "description": "The distribution name when using multiple distributions."
+    },
+    {
+      "key": "repository_url",
+      "requirement": "optional",
+      "description": "Base URL for the package repository."
     }
   ],
   "examples": [
     "pkg:alpm/arch/pacman@6.0.1-1?arch=x86_64",
     "pkg:alpm/arch/python-pip@21.0-1?arch=any",
-    "pkg:alpm/arch/containers-common@1:0.47.4-4?arch=x86_64"
+    "pkg:alpm/arch/containers-common@1:0.47.4-4?arch=x86_64",
+    "pkg:alpm/manjaro/systemd@251.7-1?arch=x86_64",
+    "pkg:alpm/arch/ca-certificates-utils@20210603-1?arch=any",
+    "pkg:alpm/arch/example%40package@1.2-3?arch=x86_64"
   ]
 }