diff --git a/pkgs/by-name/opencellid/package.nix b/pkgs/by-name/opencellid/package.nix
index 865cc18f2..787b7dca1 100644
--- a/pkgs/by-name/opencellid/package.nix
+++ b/pkgs/by-name/opencellid/package.nix
@@ -11,7 +11,7 @@
 
 stdenv.mkDerivation rec {
   pname = "opencellid";
-  version = "0-unstable-2025-03-20";
+  version = "0-unstable-2025-03-21";
 
   src = fetchurl {
     # this is a live url. updated... weekly? the server seems to silently ignore unrecognized query parameters,
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     # the API key should allow for at least 2 downloads per day (maybe more?)
     # TODO: repackage this such that hashes can be stable (mirror the data in a versioned repo, and point to that here?)
     url = "https://opencellid.org/ocid/downloads?token=${apiKey}&type=full&file=cell_towers.csv.gz&_stamp=${version}";
-    hash = "sha256-Pfy+KHTh+OCSofL2fne72R/08fDtWGg3yBtBOZHt9+k=";
+    hash = "sha256-OVh0j/TT2O1/QXcYfrakAWhyOjVyc3P71G8gUlWr6oQ=";
   };
 
   unpackPhase = ''