diff --git a/build-aux/git-authenticate.scm b/build-aux/git-authenticate.scm
index d92da90758..d51a2e4bde 100644
--- a/build-aux/git-authenticate.scm
+++ b/build-aux/git-authenticate.scm
@@ -133,6 +133,8 @@
      "B051 5948 F1E7 D3C1 B980  38A0 2646 FA30 BACA 7F08")
     ("lsl88"
      "2AE3 1395 932B E642 FC0E  D99C 9BED 6EDA 32E5 B0BC")
+    ("mab"
+     "BE62 7373 8E61 6D6D 1B3A  08E8 A21A 0202 4881 6103")
     ("marusich"
      "CBF5 9755 CBE7 E7EF EF18  3FB1 DD40 9A15 D822 469D")
     ("mbakke"