diff --git a/pkgs/by-name/ma/marvin/package.nix b/pkgs/by-name/ma/marvin/package.nix
index a79d348ff80d..3fbb912285f1 100644
--- a/pkgs/by-name/ma/marvin/package.nix
+++ b/pkgs/by-name/ma/marvin/package.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   src = fetchurl {
     name = "marvin-${finalAttrs.version}.deb";
-    url = "http://dl.chemaxon.com/marvin/${finalAttrs.version}/marvin_linux_${finalAttrs.version}.deb";
+    url = "https://dl.chemaxon.com/marvin/${finalAttrs.version}/marvin_linux_${finalAttrs.version}.deb";
     hash = "sha256-+fTO6cEJL4QRFpLQ9CXZFt7Jg3otR3ZMWN5vH+3QXmA=";
   };