Changed dependency versions to those in nixpkgs.

flake.lock

@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1689068808,
+        "narHash": "sha256-6ixXo3wt24N/melDWjq70UuHQLxGV8jZvooRanIHXw0=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "919d646de7be200f3bf08cb76ae1f09402b6f9b4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1691368598,
+        "narHash": "sha256-ia7li22keBBbj02tEdqjVeLtc7ZlSBuhUk+7XTUFr14=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "5a8e9243812ba528000995b294292d3b5e120947",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

pyproject.toml

@@ -22,15 +22,15 @@ keywords = ["spendpoint"]
 dependencies = [
     "toml~=0.10.2",
     "arklog~=0.5.1",
-    "rdflib~=7.0.0",
-    "pandas~=2.0.1",
+    "rdflib~=6.2.0",
+    "pandas~=1.5.3",
     "dacite~=1.8.1",
-    "fastapi~=0.101.0",
+    "fastapi~=0.95.1",
     "pyarrow~=12.0.1",
     "requests~=2.31.0",
-    "starlette~=0.31.0",
+    "starlette~=0.26.1",
     "python-magic~=0.4.27",
-    "uvicorn[standard]~=0.23.2",
+    "uvicorn~=0.20.0",
 ]
 
 [project.optional-dependencies]