diff --git a/bucket/fossil.json b/bucket/fossil.json
index f46038a6a0..bf2b0675df 100644
--- a/bucket/fossil.json
+++ b/bucket/fossil.json
@@ -1,16 +1,16 @@
 {
-    "version": "2.15",
+    "version": "2.13",
     "description": "A simple, high-reliability, distributed software configuration management system.",
     "homepage": "https://www.fossil-scm.org/",
     "license": "BSD-2-Clause",
     "architecture": {
         "64bit": {
-            "url": "https://www.fossil-scm.org/index.html/uv/fossil-w64-2.15.zip",
-            "hash": "691e60ae8a4c0993d0e765ddc51ffbf11c793f03989de5710804f8d0f5696f69"
+            "url": "https://www.fossil-scm.org/index.html/uv/fossil-w64-2.13.zip",
+            "hash": "10e1c01900c50f09ba44817f1d1d9f3d936ad39eb9999724f3645a172d75ec0e"
         },
         "32bit": {
-            "url": "https://www.fossil-scm.org/index.html/uv/fossil-w32-2.15.zip",
-            "hash": "9dc301254add362f0995843fe1d86a7a8890e1524d6dc84d8f9df7d4d906438c"
+            "url": "https://www.fossil-scm.org/index.html/uv/fossil-w32-2.13.zip",
+            "hash": "764f28f246abeac7d5f8c690fdb07a6d32189f2ab5ed2c471c88fdf3ccdc4c4d"
         }
     },
     "bin": "fossil.exe",