diff --git a/terraform/modules/happy-service-eks/main.tf b/terraform/modules/happy-service-eks/main.tf
index 99524d4501..30a229d0f9 100644
--- a/terraform/modules/happy-service-eks/main.tf
+++ b/terraform/modules/happy-service-eks/main.tf
@@ -389,6 +389,21 @@ resource "kubernetes_deployment_v1" "deployment" {
                 value = env.value
               }
             }
+
+            // happy configs: add env-level configs first
+            env_from {
+              secret_ref {
+                name     = "happy-config.${var.app_name}.${var.deployment_stage}"
+                optional = true
+              }
+            }
+            // happy configs: add stack-level configs second so they override env-level configs
+            env_from {
+              secret_ref {
+                name     = "happy-config.${var.app_name}.${var.deployment_stage}.${var.stack_name}"
+                optional = true
+              }
+            }
           }
         }
 
@@ -514,6 +529,21 @@ resource "kubernetes_deployment_v1" "deployment" {
                 value = env.value
               }
             }
+
+            // happy configs: add env-level configs first
+            env_from {
+              secret_ref {
+                name     = "happy-config.${var.app_name}.${var.deployment_stage}"
+                optional = true
+              }
+            }
+            // happy configs: add stack-level configs second so they override env-level configs
+            env_from {
+              secret_ref {
+                name     = "happy-config.${var.app_name}.${var.deployment_stage}.${var.stack_name}"
+                optional = true
+              }
+            }
           }
         }