diff --git a/pkgs/development/libraries/coin3d/default.nix b/pkgs/development/libraries/coin3d/default.nix
index f676c9abaa00..b477a88ed530 100644
--- a/pkgs/development/libraries/coin3d/default.nix
+++ b/pkgs/development/libraries/coin3d/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation rec {
   version = "3.1.3";
 
   src = fetchurl {
-    url = "http://ftp.coin3d.org/coin/src/all/Coin-${version}.tar.gz";
+    url = "https://bitbucket.org/Coin3D/coin/downloads/Coin-${version}.tar.gz";
     sha256 = "05ylhrcglm81dajbk132l1w892634z2i97x10fm64y1ih72phd2q";
   };
 
diff --git a/pkgs/development/libraries/soqt/default.nix b/pkgs/development/libraries/soqt/default.nix
index 80fbb53953a1..7d655ae122a0 100644
--- a/pkgs/development/libraries/soqt/default.nix
+++ b/pkgs/development/libraries/soqt/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation rec {
   version = "1.5.0";
 
   src = fetchurl {
-    url = "http://ftp.coin3d.org/coin/src/all/SoQt-${version}.tar.gz";
+    url = "https://bitbucket.org/Coin3D/coin/downloads/SoQt-${version}.tar.gz";
     sha256 = "14dbh8ynzjcgwgxjc6530c5plji7vn62kbdf447w0dp53564p8zn";
   };