diff --git a/pkgs/by-name/co/corosync/package.nix b/pkgs/by-name/co/corosync/package.nix
index 0836ed467781..97427d6769fe 100644
--- a/pkgs/by-name/co/corosync/package.nix
+++ b/pkgs/by-name/co/corosync/package.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation (finalAttrs: {
   version = "3.1.9";
 
   src = fetchurl {
-    url = "http://build.clusterlabs.org/corosync/releases/corosync-${finalAttrs.version}.tar.gz";
+    url = "https://build.clusterlabs.org/corosync/releases/corosync-${finalAttrs.version}.tar.gz";
     sha256 = "sha256-IDNUu93uGpezxQoHbq6JxjX0Bt1nTMrvyUu5CSrNlTU=";
   };