diff --git a/devenv.nix b/devenv.nix
index 6fb64ee..42367d5 100644
--- a/devenv.nix
+++ b/devenv.nix
@@ -20,10 +20,19 @@ in
     pkgs.openssl
   ];
 
+  env = {
+    LDFLAGS = "-L${pkgs.openssl.dev}/lib";
+    CFLAGS = "-I${pkgs.openssl.dev}/include";
+    SWIG_FEATURES = "-I${pkgs.openssl.dev}/include";
+  };
+
   # https://devenv.sh/languages/
   languages.nix.enable = true;
   languages.python = {
     enable = true;
+    libraries = [
+      pkgs.openssl.dev
+    ];
     venv = {
       enable = true;
       requirements = builtins.readFile req;