diff --git a/data/manifest.json b/data/manifest.json
index e963c9e5..327648fb 100644
--- a/data/manifest.json
+++ b/data/manifest.json
@@ -1,5 +1,5 @@
 {
-  "version": "1.27.1",
+  "version": "1.27.2",
   "damagedecks": ["data/damage-decks/core.json"],
   "factions": ["data/factions/factions.json"],
   "stats": ["data/stats/stats.json"],
diff --git a/data/upgrades/cannon.json b/data/upgrades/cannon.json
index 5354760a..f0081f1d 100644
--- a/data/upgrades/cannon.json
+++ b/data/upgrades/cannon.json
@@ -153,6 +153,13 @@
         "title": "Underslung Blaster Cannon",
         "type": "Cannon",
         "slots": ["Cannon"],
+        "attack": {
+          "arc": "Single Turret Arc",
+          "value": 2,
+          "minrange": 1,
+          "maxrange": 1,
+          "ordnance": false
+        },
         "grants": [
           {
             "type": "action",
diff --git a/package.json b/package.json
index a2a69924..ff8266c2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xwing-data2",
-  "version": "1.27.1",
+  "version": "1.27.2",
   "repository": "git@github.com:guidokessels/xwing-data2.git",
   "author": "Guido Kessels <mail@guidokessels.com>",
   "license": "MIT",