diff --git a/changes/bug25070 b/changes/bug25070
new file mode 100644
index 0000000000..c2f4e58c45
--- /dev/null
+++ b/changes/bug25070
@@ -0,0 +1,3 @@
+  o Major bugfixes (protocol versions):
+    - Add Link protocol version 5 to the supported protocols list.
+      Fixes bug 25070; bugfix on 0.3.1.1-alpha.
diff --git a/src/or/protover.c b/src/or/protover.c
index 1a5f4ac91f..41b50df87f 100644
--- a/src/or/protover.c
+++ b/src/or/protover.c
@@ -332,7 +332,7 @@ protover_get_supported_protocols(void)
     "HSDir=1-2 "
     "HSIntro=3-4 "
     "HSRend=1-2 "
-    "Link=1-4 "
+    "Link=1-5 "
     "LinkAuth=1,3 "
     "Microdesc=1-2 "
     "Relay=1-2";