diff --git a/schemas/Stepwise.json b/schemas/Stepwise.json
new file mode 100644
index 0000000..51853e8
--- /dev/null
+++ b/schemas/Stepwise.json
@@ -0,0 +1,52 @@
+{
+    "$schema": "http://json-schema.org/schema#",
+    "type": "object",
+    "properties": {
+        "Inputs": {
+            "type": "array",
+            "items": {
+                "type": "string"
+            }
+        },
+        "Name": {
+            "type": "string"
+        },
+        "NegativeHysteresis": {
+            "type": "integer"
+        },
+        "Output": {
+            "type": "array",
+            "items": {
+                "type": "number"
+            }
+        },
+        "PositiveHysteresis": {
+            "type": "integer"
+        },
+        "Reading": {
+            "type": "array",
+            "items": {
+                "type": "number"
+            }
+        },
+        "Type": {
+            "type": "string"
+        },
+        "Zones": {
+            "type": "array",
+            "items": {
+                "type": "string"
+            }
+        }
+    },
+    "required": [
+        "Inputs",
+        "Name",
+        "NegativeHysteresis",
+        "Output",
+        "PositiveHysteresis",
+        "Reading",
+        "Type",
+        "Zones"
+    ]
+}
diff --git a/src/EntityManager.cpp b/src/EntityManager.cpp
index cd14cc1..9198ee5 100644
--- a/src/EntityManager.cpp
+++ b/src/EntityManager.cpp
@@ -70,8 +70,8 @@
                  {"FOUND", probe_type_codes::FOUND},
                  {"MATCH_ONE", probe_type_codes::MATCH_ONE}}};
 
-static constexpr std::array<const char *, 3> settableInterfaces = {
-    "Thresholds", "Pid", "Pid.Zone"};
+static constexpr std::array<const char *, 4> settableInterfaces = {
+    "Thresholds", "Pid", "Pid.Zone", "Stepwise"};
 using JsonVariantType =
     sdbusplus::message::variant<std::vector<std::string>, std::string, int64_t,
                                 uint64_t, double, int32_t, uint32_t, int16_t,