diff --git a/CHANGELOG.md b/CHANGELOG.md
index 658bb3d..11880f1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## 5.X.Y
 * Fix: ignore stale player list entries (By @cetteup #744)
 * Feat: Plutonium - Added support (#745)
+* Fix: Soulmask set version from rules if available (By @podrivo #772)
 
 ## 5.3.2
 * Fix: detect BFBC2 Vietnam DLC as BFBC2 (By @cetteup #713)
diff --git a/GAMES_LIST.md b/GAMES_LIST.md
index d6d2d95..1bacb56 100644
--- a/GAMES_LIST.md
+++ b/GAMES_LIST.md
@@ -279,7 +279,7 @@
 | sof2                 | Soldier of Fortune 2                             |                                                  |
 | soldat               | Soldat                                           | [Notes](#soldat)                                 |
 | sotf                 | Sons Of The Forest                               | [Valve Protocol](#valve)                         |
-| soulmask             | Soulmask                                         | [Valve Protocol](#valve)                         |
+| soulmask             | Soulmask                                         | [Notes](#soulmask), [Valve Protocol](#valve)     |
 | spaceengineers       | Space Engineers                                  | [Valve Protocol](#valve)                         |
 | squad                | Squad                                            | [EOS Protocol](#epic)                            |
 | ssl                  | SCP: Secret Labratory                            | [Notes](#ssl)                                    |
@@ -518,6 +518,9 @@ For queries to work, A2S needs to be setup in the server config, more info [here
 
 Does not provide players data.
 
+### <a name="soulmask"></a>Soulmask
+Soulmask reports a hardcoded version (`1.0.0.0`) in the A2S_INFO response. To get the real game version, pass `requestRules: true` — the actual version is read from the `NO_s` rules key.
+
 Protocols with Additional Notes
 ---
 
diff --git a/lib/games.js b/lib/games.js
index 77a1456..c8bcda8 100644
--- a/lib/games.js
+++ b/lib/games.js
@@ -2794,6 +2794,9 @@ export const games = {
       port: 8777,
       port_query: 27015,
       protocol: 'valve'
+    },
+    extra: {
+      doc_notes: 'soulmask'
     }
   },
   ssl: {
diff --git a/protocols/valve.js b/protocols/valve.js
index 402cbea..61b07cc 100644
--- a/protocols/valve.js
+++ b/protocols/valve.js
@@ -11,7 +11,8 @@ const AppId = {
   CS_Source: 240,
   EternalSilence: 17550,
   Insurgency_MIC: 17700,
-  Source_SDK_Base_2006: 215
+  Source_SDK_Base_2006: 215,
+  Soulmask: 2646460
 }
 
 export default class valve extends Core {
@@ -275,6 +276,13 @@ export default class valve extends Core {
         state.password = true
       }
     }
+
+    // Soulmask reports a hardcoded version in A2S_INFO; real version is in rules
+    if (appId === AppId.Soulmask) {
+      if ('NO_s' in rules) {
+        state.version = rules.NO_s
+      }
+    }
   }
 
   async cleanup (/** Results */ state) {