diff --git a/releases/silverstripe.json b/releases/silverstripe.json
index f1e2aeb1..a18d7478 100644
--- a/releases/silverstripe.json
+++ b/releases/silverstripe.json
@@ -2,78 +2,39 @@
   "releases": {
     "6.1": {
       "name": "6.1",
-      "releaseDate": "2025-10-31",
+      "releaseDate": "2025-10-13",
       "eoas": "2026-04-30",
       "eol": "2026-10-31"
     },
     "6.0": {
       "name": "6.0",
       "releaseDate": "2025-06-10",
-      "eoas": "2025-10-31",
-      "eol": "2026-04-30"
+      "eoas": "2025-10-13",
+      "eol": "2026-04-14"
     },
     "5.4": {
       "name": "5.4",
       "releaseDate": "2025-04-10",
-      "eoas": "2026-04-30"
+      "eoas": "2026-04-11",
+      "eol": "2027-04-30"
     },
     "5.3": {
       "name": "5.3",
       "releaseDate": "2024-11-04",
-      "eoas": "2025-04-30",
-      "eol": "2025-10-31"
+      "eoas": "2025-04-10",
+      "eol": "2025-10-11"
     },
     "5.2": {
       "name": "5.2",
       "releaseDate": "2024-04-15",
-      "eoas": "2024-11-30",
-      "eol": "2025-05-31"
-    },
-    "5.1": {
-      "name": "5.1",
-      "releaseDate": "2023-10-17"
-    },
-    "5.0": {
-      "name": "5.0",
-      "releaseDate": "2023-05-08"
+      "eoas": "2024-11-04",
+      "eol": "2025-05-05"
     },
     "4.13": {
       "name": "4.13",
       "releaseDate": "2023-04-26",
-      "eoas": "2024-04-30",
-      "eol": "2025-06-30"
-    },
-    "4.12": {
-      "name": "4.12",
-      "releaseDate": "2022-12-19"
-    },
-    "4.11": {
-      "name": "4.11",
-      "releaseDate": "2022-06-28"
-    },
-    "4.10": {
-      "name": "4.10",
-      "releaseDate": "2022-01-27"
-    },
-    "3.7": {
-      "name": "3.7",
-      "releaseDate": "2018-06-08"
-    },
-    "3.1": {
-      "name": "3.1",
-      "releaseDate": "2013-10-01"
-    },
-    "3.0": {
-      "name": "3.0",
-      "releaseDate": "2012-06-28"
-    },
-    "2.4": {
-      "name": "2.4",
-      "releaseDate": "2011-02-02"
-    },
-    "2.3": {
-      "name": "2.3",
-      "releaseDate": "2009-02-23"
+      "eoas": "2024-04-27",
+      "eol": "2025-06-10"
     }
   },
   "versions": {
diff --git a/releases/ubuntu.json b/releases/ubuntu.json
index 83a258f2..06428b2e 100644
--- a/releases/ubuntu.json
+++ b/releases/ubuntu.json
@@ -356,6 +356,10 @@
     "5.04": {
       "name": "5.04",
       "date": "2005-04-08"
+    },
+    "4.10": {
+      "name": "4.10",
+      "date": "2004-10-20"
     }
   }
 }
\ No newline at end of file
diff --git a/src/silverstripe.py b/src/silverstripe.py
new file mode 100644
index 00000000..1973207c
--- /dev/null
+++ b/src/silverstripe.py
@@ -0,0 +1,20 @@
+from common import dates, http
+from common.releasedata import ProductData, config_from_argv
+
+"""Fetches Silverstripe releases from https://www.silverstripe.org/software/roadmap/ JSON data."""
+
+config = config_from_argv()
+with ProductData(config.product) as product_data:
+    json = http.fetch_json(config.url)
+    for release_data in json["data"]:
+        release_name = release_data["version"]
+        release = product_data.get_release(release_name)
+
+        release_date_str = release_data.get("releaseDate")
+        release.set_release_date(dates.parse_date_or_month_year_date(release_date_str))
+
+        eoas_date_str = release_data.get("partialSupport")
+        release.set_eoas(dates.parse_date_or_month_year_date(eoas_date_str))
+
+        eol_date_str = release_data.get("supportEnds")
+        release.set_eol(dates.parse_date_or_month_year_date(eol_date_str))