diff --git a/pkgs/by-name/p0/p0f/package.nix b/pkgs/by-name/p0/p0f/package.nix
index 19f05ba90377..1fadb2ccc935 100644
--- a/pkgs/by-name/p0/p0f/package.nix
+++ b/pkgs/by-name/p0/p0f/package.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation (finalAttrs: {
   version = "3.09b";
 
   src = fetchurl {
-    url = "http://lcamtuf.coredump.cx/p0f3/releases/p0f-${finalAttrs.version}.tgz";
+    url = "https://lcamtuf.coredump.cx/p0f3/releases/p0f-${finalAttrs.version}.tgz";
     sha256 = "0zqfq3gdnha29ckvlqmyp36c0jhj7f69bhqqx31yb6vkirinhfsl";
   };