diff --git a/hosts/M4Pro/default.nix b/hosts/M4Pro/default.nix
index 596a582..209c306 100644
--- a/hosts/M4Pro/default.nix
+++ b/hosts/M4Pro/default.nix
@@ -1,4 +1,14 @@
 { ... }:
+let
+  customCert = "/Users/mfyuu/.local/share/ca-certificates/corp.pem";
+in
 {
-  # M4Pro-specific configuration
+  # M4Pro-specific configuration (corporate SSL certificate)
+  home-manager.users.mfyuu = {
+    home.sessionVariables = {
+      DENO_CERT = customCert;
+      NODE_EXTRA_CA_CERTS = customCert;
+      GIT_SSL_CAINFO = customCert;
+    };
+  };
 }