diff --git a/scripts/buildAssets/definitions.ts b/scripts/buildAssets/definitions.ts
index 577366583..67a60dd2e 100644
--- a/scripts/buildAssets/definitions.ts
+++ b/scripts/buildAssets/definitions.ts
@@ -190,6 +190,7 @@ interface GunDefinitionsList {
   ids: Record<string, number>;
   shared: {
     [key: string]: {
+      rotationSpeed: number;
       shotDispersionFactors: {
         turretRotation: number;
         afterShot: number;
@@ -614,6 +615,7 @@ export async function definitions(production: boolean) {
 
               tankDefinitions[tankId].turrets[turretIndex].guns.push({
                 id: gunId,
+                rotationSpeed: gunListEntry.rotationSpeed,
                 name: gunName,
                 tier: gunListEntry.level as Tier,
                 shells: [],
diff --git a/src/core/blitzkrieg/tankDefinitions.ts b/src/core/blitzkrieg/tankDefinitions.ts
index 6a0459e4a..a84e1af59 100644
--- a/src/core/blitzkrieg/tankDefinitions.ts
+++ b/src/core/blitzkrieg/tankDefinitions.ts
@@ -63,6 +63,7 @@ export type GunDefinition =
   | GunDefinitionAutoLoader
   | GunDefinitionAutoReloader;
 interface GunDefinitionBase {
+  rotationSpeed: number;
   id: number;
   name: string;
   tier: Tier;