diff --git a/relenv/python-versions.json b/relenv/python-versions.json
index af57561c..b901f507 100644
--- a/relenv/python-versions.json
+++ b/relenv/python-versions.json
@@ -245,6 +245,16 @@
      "darwin",
      "win32"
     ]
+   },
+   "3.51.3.0": {
+    "url": "https://sqlite.org/2026/sqlite-autoconf-{version}.tar.gz",
+    "sha256": "81f5be397049b0cae1b167f2225af7646fc0f82e4a9b3c48c9ea3a533e21d77a",
+    "sqliteversion": "3510300",
+    "platforms": [
+     "linux",
+     "darwin",
+     "win32"
+    ]
    }
   },
   "xz": {
@@ -256,6 +266,15 @@
      "darwin",
      "win32"
     ]
+   },
+   "5.8.3": {
+    "url": "http://tukaani.org/xz/xz-{version}.tar.gz",
+    "sha256": "3d3a1b973af218114f4f889bbaa2f4c037deaae0c8e815eec381c3d546b974a0",
+    "platforms": [
+     "linux",
+     "darwin",
+     "win32"
+    ]
    }
   },
   "libffi": {
@@ -416,6 +435,15 @@
      "darwin",
      "win32"
     ]
+   },
+   "2.7.5": {
+    "url": "https://github.com/libexpat/libexpat/releases/download/R_2_7_5/expat-{version}.tar.xz",
+    "sha256": "1032dfef4ff17f70464827daa28369b20f6584d108bc36f17ab1676e1edd2f91",
+    "platforms": [
+     "linux",
+     "darwin",
+     "win32"
+    ]
    }
   }
  }