diff --git a/src/pcb/pcb_copper_pour.ts b/src/pcb/pcb_copper_pour.ts
index 88762f67..54829c44 100644
--- a/src/pcb/pcb_copper_pour.ts
+++ b/src/pcb/pcb_copper_pour.ts
@@ -13,6 +13,7 @@ const pcb_copper_pour_base = z.object({
   subcircuit_id: z.string().optional(),
   layer: layer_ref,
   source_net_id: z.string().optional(),
+  clearance: length.optional(),
   covered_with_solder_mask: z.boolean().optional().default(true),
 })
 
@@ -37,6 +38,7 @@ export interface PcbCopperPourRect {
   subcircuit_id?: string
   layer: LayerRef
   source_net_id?: string
+  clearance?: Length
   shape: "rect"
   center: Point
   width: Length
@@ -63,6 +65,7 @@ export interface PcbCopperPourBRep {
   subcircuit_id?: string
   layer: LayerRef
   source_net_id?: string
+  clearance?: Length
   shape: "brep"
   brep_shape: BRepShape
 }
@@ -87,6 +90,7 @@ export interface PcbCopperPourPolygon {
   subcircuit_id?: string
   layer: LayerRef
   source_net_id?: string
+  clearance?: Length
   shape: "polygon"
   points: Point[]
 }
diff --git a/tests/pcb_copper_pour.test.ts b/tests/pcb_copper_pour.test.ts
index 5c0911e8..5f4bf7ef 100644
--- a/tests/pcb_copper_pour.test.ts
+++ b/tests/pcb_copper_pour.test.ts
@@ -11,10 +11,12 @@ test("pcb_copper_pour rect parses", () => {
     height: 10,
     layer: "top",
     source_net_id: "net1",
+    clearance: 0.2,
   })
   expect(pour.shape).toBe("rect")
   if (pour.shape === "rect") {
     expect(pour.width).toBe(10)
+    expect(pour.clearance).toBe(0.2)
   }
   expect((pour as any).pcb_copper_pour_id).toBeDefined()
   expect(any_circuit_element.parse(pour)).toBeDefined()
@@ -76,3 +78,19 @@ test("coveredWithSolderMask defaults to true", () => {
   })
   expect(pour.covered_with_solder_mask).toBe(true)
 })
+
+test("pcb_copper_pour clearance is optional", () => {
+  const pour = pcb_copper_pour.parse({
+    type: "pcb_copper_pour",
+    shape: "polygon",
+    points: [
+      { x: 0, y: 0 },
+      { x: 10, y: 0 },
+      { x: 5, y: 10 },
+    ],
+    layer: "top",
+    clearance: "0.33mm",
+  })
+
+  expect(pour.clearance).toBe(0.33)
+})