diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 847a186b5..8891ecb46 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -85,3 +85,4 @@ and we will add you. **All** contributors belong here. 💯
 * [Tomi Paananen](https://github.com/tompaana)
 * [Troy Connor](https://github.com/troy0820)
 * [Phill Gibson](https://github.com/phillipgibson)
+* [Ludvig Liljenberg](https://github.com/ludfjig)
diff --git a/mage/setup/tools.go b/mage/setup/tools.go
index 189f78883..f28289959 100644
--- a/mage/setup/tools.go
+++ b/mage/setup/tools.go
@@ -57,6 +57,11 @@ func EnsureBufBuild() {
 			"amd64": "x86_64",
 		},
 	}
+
+	if runtime.GOOS == "windows" {
+		opts.Ext = ".exe"
+	}
+
 	err := downloads.DownloadToGopathBin(opts)
 	mgx.Must(err)
 }