diff --git a/overlays.nix b/overlays.nix
index 7e503de7cb5f4c38b5b9d2b13a25987089b74eeb..395e00027d7100f1178402e0f4c2553a18b02e0c 100644
--- a/overlays.nix
+++ b/overlays.nix
@@ -1,4 +1,6 @@
 self: super: {
+  openssl = self.openssl_1_1;
+
   python27 = super.python27.override {
     packageOverrides = python-self: python-super: {
       # new tahoe-lafs dependency