diff --git a/packages/dev-lang/fsharp/fsharp-scm.exheres-0 b/packages/dev-lang/fsharp/fsharp-scm.exheres-0
index c5e885b..f51e256 100644
--- a/packages/dev-lang/fsharp/fsharp-scm.exheres-0
+++ b/packages/dev-lang/fsharp/fsharp-scm.exheres-0
@@ -15,7 +15,7 @@ DEPENDENCIES="
     build:
         virtual/pkg-config
     build+run:
-        dev-lang/mono[>=2.9]
+        dev-lang/mono[>=4.2.2.30-r1]
 "
 
 BUGS_TO="virkony@gmail.com"
@@ -24,16 +24,6 @@ DEFAULT_SRC_CONFIGURE_PARAMS=( --with-gacdir="/usr/$(exhost --target)/lib/mono/g
 
 DEFAULT_SRC_COMPILE_PARAMS=( -j1 )
 
-src_prepare() {
-    # ssl with NuGet seems broken
-    # https://github.com/fsharp/fsharp/issues/617
-    edo sed -i \
-            -e 's#https://www.nuget.org/api/v2/#http://www.nuget.org/api/v2/#' \
-            .nuget/NuGet.Config
-
-    autotools_src_prepare
-}
-
 src_compile() {
     # uses NuGet to build, no easy way around,
     # unless you like the alternative in e.g. games-strategy/openra