diff --git a/srcpkgs/sage-data-conway_polynomials/update b/srcpkgs/sage-data-conway_polynomials/update
index 628e2749f01..d3c5b7df297 100644
--- a/srcpkgs/sage-data-conway_polynomials/update
+++ b/srcpkgs/sage-data-conway_polynomials/update
@@ -1 +1,2 @@
 pkgname=conway_polynomials
+site=https://mirrors.mit.edu/sage/spkg/upstream/conway_polynomials/
diff --git a/srcpkgs/sage-data-elliptic_curves/update b/srcpkgs/sage-data-elliptic_curves/update
index 8155f52ce93..707890073d0 100644
--- a/srcpkgs/sage-data-elliptic_curves/update
+++ b/srcpkgs/sage-data-elliptic_curves/update
@@ -1 +1,2 @@
 pkgname=elliptic_curves
+site=https://mirrors.mit.edu/sage/spkg/upstream/elliptic_curves/