diff --git a/appliances/mikrotik-chr.gns3a b/appliances/mikrotik-chr.gns3a
index 4175e36..6909260 100644
--- a/appliances/mikrotik-chr.gns3a
+++ b/appliances/mikrotik-chr.gns3a
@@ -28,81 +28,81 @@
     },
     "images": [
         {
-            "filename": "chr-7.1rc7.img",
-            "version": "7.1rc7",
-            "md5sum": "04bc0ae1e5fbbda1522135bc57cf6560",
+            "filename": "chr-7.4rc2.img",
+            "version": "7.4rc2",
+            "md5sum": "ddb107c95cc7d231f8d8bbdb4eebdab6",
             "filesize": 134217728,
             "download_url": "http://www.mikrotik.com/download",
-            "direct_download_url": "https://download.mikrotik.com/routeros/7.1rc7/chr-7.1rc7.img.zip",
+            "direct_download_url": "https://download.mikrotik.com/routeros/7.4rc2/chr-7.4rc2.img.zip",
             "compression": "zip"
         },
         {
-            "filename": "chr-7.1.img",
-            "version": "7.1",
-            "md5sum": "41545bc7b55717fe5bb1e489ee39ca45",
+            "filename": "chr-7.3.1.img",
+            "version": "7.3.1",
+            "md5sum": "99f8ea75f8b745a8bf5ca3cc1bd325e3",
             "filesize": 134217728,
             "download_url": "http://www.mikrotik.com/download",
-            "direct_download_url": "https://download.mikrotik.com/routeros/7.1/chr-7.1.img.zip",
+            "direct_download_url": "https://download.mikrotik.com/routeros/7.3.1/chr-7.3.1.img.zip",
             "compression": "zip"
         },
         {
-            "filename": "chr-6.49rc2.img",
-            "version": "6.49rc2",
-            "md5sum": "e1088f8f64ac3d6ecf2e56ac96261226",
-            "filesize": 67108864,
+            "filename": "chr-7.1.5.img",
+            "version": "7.1.5",
+            "md5sum": "9c0be05f891df2b1400bdae5e719898e",
+            "filesize": 134217728,
             "download_url": "http://www.mikrotik.com/download",
-            "direct_download_url": "https://download.mikrotik.com/routeros/6.49rc2/chr-6.49rc2.img.zip",
+            "direct_download_url": "https://download.mikrotik.com/routeros/7.1.5/chr-7.1.5.img.zip",
             "compression": "zip"
         },
         {
-            "filename": "chr-6.49.1.img",
-            "version": "6.49.1",
-            "md5sum": "6c896c4c853de99f2ea77f0f4b102261",
+            "filename": "chr-6.49.6.img",
+            "version": "6.49.6",
+            "md5sum": "ae27d38acc9c4dcd875e0f97bcae8d97",
             "filesize": 67108864,
             "download_url": "http://www.mikrotik.com/download",
-            "direct_download_url": "https://download.mikrotik.com/routeros/6.49.1/chr-6.49.1.img.zip",
+            "direct_download_url": "https://download.mikrotik.com/routeros/6.49.6/chr-6.49.6.img.zip",
             "compression": "zip"
         },
         {
-            "filename": "chr-6.48.5.img",
-            "version": "6.48.5",
-            "md5sum": "d14debd4cd989f16f695b5b075960703",
+            "filename": "chr-6.48.6.img",
+            "version": "6.48.6",
+            "md5sum": "875574a561570227ff8f395aabe478c6",
             "filesize": 67108864,
             "download_url": "http://www.mikrotik.com/download",
-            "direct_download_url": "https://download.mikrotik.com/routeros/6.48.5/chr-6.48.5.img.zip",
+            "direct_download_url": "https://download.mikrotik.com/routeros/6.48.6/chr-6.48.6.img.zip",
             "compression": "zip"
         }
     ],
     "versions": [
         {
-            "name": "7.1rc7",
+            "name": "7.4rc2",
             "images": {
-                "hda_disk_image": "chr-7.1rc7.img"
+                "hda_disk_image": "chr-7.4rc2.img"
             }
         },
         {
-            "name": "7.1",
+            "name": "7.3.1",
             "images": {
-                "hda_disk_image": "chr-7.1.img"
+                "hda_disk_image": "chr-7.3.1.img"
             }
         },
         {
-            "name": "6.49rc2",
+            "name": "7.1.5",
             "images": {
-                "hda_disk_image": "chr-6.49rc2.img"
+                "hda_disk_image": "chr-7.1.5.img"
             }
         },
         {
-            "name": "6.49.1",
+            "name": "6.49.6",
             "images": {
-                "hda_disk_image": "chr-6.49.1.img"
+                "hda_disk_image": "chr-6.49.6.img"
             }
         },
         {
-            "name": "6.48.5",
+            "name": "6.48.6",
             "images": {
-                "hda_disk_image": "chr-6.48.5.img"
+                "hda_disk_image": "chr-6.48.6.img"
             }
         }
     ]
-}
+}
\ No newline at end of file