diff --git a/nimble.lock b/nimble.lock
deleted file mode 100644
index f2ddf6e..0000000
--- a/nimble.lock
+++ /dev/null
@@ -1,16 +0,0 @@
-{
-  "version": 2,
-  "packages": {
-    "constantine": {
-      "version": "0.1.0",
-      "vcsRevision": "bc3845aa492b52f7fef047503b1592e830d1a774",
-      "url": "https://github.com/mratsim/constantine",
-      "downloadMethod": "git",
-      "dependencies": [],
-      "checksums": {
-        "sha1": "09594d4ce93e83ae377a7a9cb8fd4472b104ca4b"
-      }
-    }
-  },
-  "tasks": {}
-}
diff --git a/poseidon2.nimble b/poseidon2.nimble
index 9896cf8..c710332 100644
--- a/poseidon2.nimble
+++ b/poseidon2.nimble
@@ -5,7 +5,7 @@ license     = "MIT"
 
 installExt  = @["nim"]
 
+requires "https://github.com/mratsim/constantine"
 #requires "https://github.com/mratsim/constantine#bc3845aa492b52f7fef047503b1592e830d1a774"
-requires "https://github.com/mratsim/constantine#782d838e7a073262750eff593af6dfff3ff832dd"
 
 bin = @["bench/bench_perm", "bench/bench_griffin"]
\ No newline at end of file