diff --git a/src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/infrastructure/Firefox.kt b/src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/infrastructure/Firefox.kt
index 8d1130d..5b590b4 100644
--- a/src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/infrastructure/Firefox.kt
+++ b/src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/infrastructure/Firefox.kt
@@ -38,5 +38,5 @@ fun Prov.installFirefox() = task {
     )
 
     aptInstall("firefox")
-    cmd("apt upgrade -y firefox", sudo = true)
+    cmd("apt-get upgrade -y firefox", sudo = true)
 }