diff --git a/packages/builder-util/src/arch.ts b/packages/builder-util/src/arch.ts
index 7c358e3ff6a..cc999a767fc 100644
--- a/packages/builder-util/src/arch.ts
+++ b/packages/builder-util/src/arch.ts
@@ -13,7 +13,7 @@ export function toLinuxArchString(arch: Arch, targetName: string): string {
     case Arch.armv7l:
       return targetName === "snap" || targetName === "deb" ? "armhf" : "armv7l"
     case Arch.arm64:
-      return "arm64"
+      return targetName === "pacman" ? "aarch64" : "arm64"
 
     default:
       throw new Error(`Unsupported arch ${arch}`)
@@ -68,5 +68,10 @@ export function getArtifactArchName(arch: Arch, ext: string): string {
       archName = "armhf"
     }
   }
+  else if (arch === Arch.arm64) {
+    if (ext === "pacman" || ext === "rpm") {
+      archName = "aarch64"
+    }
+  }
   return archName
 }
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