diff --git a/pkgs/sdf2/sdf2.fix b/pkgs/sdf2/sdf2.fix
index 7f0736d016a9..6f9c2190dfaa 100644
--- a/pkgs/sdf2/sdf2.fix
+++ b/pkgs/sdf2/sdf2.fix
@@ -4,7 +4,7 @@ Package(
   , ("build", Relative("sdf2/sdf2-build.sh"))
 
   , ("src", App(IncludeFix("fetchurl/fetchurl.fix"),
-      [ ("url", "ftp://ftp.stratego-language.org/pub/stratego/sdf2/sdf2-bundle-1.6.tar.gz")
+      [ ("url", "http://losser.st-lab.cs.uu.nl/~eelco/mirror/sdf2-bundle-1.6.tar.gz")
       , ("md5", "283be0b4c7c9575c1b5cc735316e6192")
       ]))
 
diff --git a/pkgs/strategoxt/strategoxt.fix b/pkgs/strategoxt/strategoxt.fix
index 0161ff9dcdda..d5ad245266c0 100644
--- a/pkgs/strategoxt/strategoxt.fix
+++ b/pkgs/strategoxt/strategoxt.fix
@@ -4,7 +4,7 @@ Package(
   , ("build", Relative("strategoxt/strategoxt-build.sh"))
 
   , ("src", App(IncludeFix("fetchurl/fetchurl.fix"),
-      [ ("url", "ftp://ftp.stratego-language.org/pub/stratego/StrategoXT/strategoxt-0.9.2-3067.tar.gz")
+      [ ("url", "http://losser.st-lab.cs.uu.nl/~eelco/mirror/strategoxt-0.9.2-3067.tar.gz")
       , ("md5", "0d849a9409c40cdc66cbdee4d00726b2")
       ]))