diff --git a/pkgs/applications/science/math/sage/sage-src.nix b/pkgs/applications/science/math/sage/sage-src.nix
index 91e855777f0..ecbda8f239a 100644
--- a/pkgs/applications/science/math/sage/sage-src.nix
+++ b/pkgs/applications/science/math/sage/sage-src.nix
@@ -24,14 +24,14 @@ let
   );
 in
 stdenv.mkDerivation rec {
-  version = "9.3.rc4";
+  version = "9.3";
   pname = "sage-src";
 
   src = fetchFromGitHub {
     owner = "sagemath";
     repo = "sage";
     rev = version;
-    sha256 = "sha256-LDY07By2j6JagkgT9zeDJ93+m2/oXXEnDRTDzmR8ftk=";
+    sha256 = "sha256-l9DX8jcDdKA7GJ6xU+nBsmlZxrcZ9ZUAJju621ooBEo=";
   };
 
   # Patches needed because of particularities of nix or the way this is packaged.
diff --git a/pkgs/data/misc/graphs/default.nix b/pkgs/data/misc/graphs/default.nix
index 19438d83566..93a0d75aaf6 100644
--- a/pkgs/data/misc/graphs/default.nix
+++ b/pkgs/data/misc/graphs/default.nix
@@ -7,9 +7,7 @@ stdenv.mkDerivation rec {
   version = "20210214";
 
   src = fetchurl {
-    url = "https://mirrors.mit.edu/sage/spkg/upstream/${pname}/${pname}-${version}.tar.bz2";
-    # TODO: switch to the url below once Sage 9.3 is released
-    # url = "mirror://sageupstream/${pname}/${pname}-${version}.tar.bz2";
+    url = "mirror://sageupstream/${pname}/${pname}-${version}.tar.bz2";
     sha256 = "sha256-ByN8DZhTYRUFw4n9e7klAMh0P1YxurtND0Xf2DMvN0E=";
   };