diff --git a/PrimeSieve.ipkg b/PrimeSieve.ipkg
index f372568..49f2d53 100644
--- a/PrimeSieve.ipkg
+++ b/PrimeSieve.ipkg
@@ -12,7 +12,8 @@ license = "Parity Public License 7.0.0"
 -- langversion
 
 -- packages to add to search path
--- depends = 
+depends = contrib
+        , collie
 
 -- modules to install
 modules = PrimeSieve
diff --git a/flake.lock b/flake.lock
index addab08..0093afd 100644
--- a/flake.lock
+++ b/flake.lock
@@ -61,11 +61,11 @@
         "rust": "rust"
       },
       "locked": {
-        "lastModified": 1686465942,
-        "narHash": "sha256-+6ake+PQ9zVKrKaz3g8haA/t0woq1XLmbxYtoQwLgd8=",
+        "lastModified": 1687504884,
+        "narHash": "sha256-M7eCdHpEV6WkVL2vPahM0X86eTS+zw72xeCC1LN2/I4=",
         "ref": "trunk",
-        "rev": "b306a4aff0f183268bd11d96ab3043638097f6f0",
-        "revCount": 72,
+        "rev": "b4d806c37bdd0dc91980e4e4eb0dee5383964cf5",
+        "revCount": 73,
         "type": "git",
         "url": "https://git.sr.ht/~thatonelutenist/idr2nix"
       },
@@ -99,11 +99,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1686398752,
-        "narHash": "sha256-nGWNQVhSw4VSL+S0D0cbrNR9vs9Bq7rlYR+1K5f5j6w=",
+        "lastModified": 1687488839,
+        "narHash": "sha256-7JDjuyHwUvGJJge9jxfRJkuYyL5G5yipspc4J3HwjGA=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "a30520bf8eabf8a5c37889d661e67a2dbcaa59e6",
+        "rev": "f9e94676ce6c7531c44d38da61d2669ebec0f603",
         "type": "github"
       },
       "original": {
diff --git a/primesieve-sources.json b/primesieve-sources.json
index 7769413..eb111d5 100644
--- a/primesieve-sources.json
+++ b/primesieve-sources.json
@@ -1,9 +1,21 @@
 {
-  "sources": {},
-  "sorted": [],
+  "sources": {
+    "collie": {
+      "source": {
+        "url": "https://github.com/ohad/collie",
+        "rev": "46bff04a8d9a1598fec9b19f515541df16dc64ef",
+        "sha256": "sha256-0GziqzEUDs1tFd5yiu5NECV0nP1aMPe2QxS9oqhmW6I="
+      },
+      "ipkg": "collie.ipkg",
+      "name": "collie"
+    }
+  },
+  "sorted": [
+    "collie"
+  ],
   "idris2": {
     "url": "https://github.com/idris-lang/Idris2",
-    "rev": "5dcf62499df5cb861d153372ef3b4386dba25c98",
-    "sha256": "sha256-P9fVZNtgu08cvJmanL88W4F2l0PWKbSk8h8SS5JEN/M="
+    "rev": "31c17ebec2e64c095076e8425637176db7658492",
+    "sha256": "sha256-DYwyjTdJjPDd/H5keb0tfmzR4AGwg/EaZMMQnLfksfY="
   }
 }