diff --git a/package-lock.json b/package-lock.json
index 73e3a80..d28a2fd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
       "dependencies": {
         "hachure-fill": "^0.5.2",
         "path-data-parser": "^0.1.0",
-        "points-on-curve": "^0.2.0",
+        "points-on-curve": "^1.0.1",
         "points-on-path": "^0.2.1"
       },
       "devDependencies": {
@@ -1639,9 +1639,9 @@
       }
     },
     "node_modules/points-on-curve": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/points-on-curve/-/points-on-curve-0.2.0.tgz",
-      "integrity": "sha512-0mYKnYYe9ZcqMCWhUjItv/oHjvgEsfKvnUTg8sAtnHr3GVy7rGkXCb6d5cSyqrWqL4k81b9CPg3urd+T7aop3A=="
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/points-on-curve/-/points-on-curve-1.0.1.tgz",
+      "integrity": "sha512-3nmX4/LIiyuwGLwuUrfhTlDeQFlAhi7lyK/zcRNGhalwapDWgAGR82bUpmn2mA03vII3fvNCG8jAONzKXwpxAg=="
     },
     "node_modules/points-on-path": {
       "version": "0.2.1",
@@ -1652,6 +1652,11 @@
         "points-on-curve": "0.2.0"
       }
     },
+    "node_modules/points-on-path/node_modules/points-on-curve": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/points-on-curve/-/points-on-curve-0.2.0.tgz",
+      "integrity": "sha512-0mYKnYYe9ZcqMCWhUjItv/oHjvgEsfKvnUTg8sAtnHr3GVy7rGkXCb6d5cSyqrWqL4k81b9CPg3urd+T7aop3A=="
+    },
     "node_modules/prelude-ls": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.2.1.tgz",
@@ -3418,9 +3423,9 @@
       "dev": true
     },
     "points-on-curve": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/points-on-curve/-/points-on-curve-0.2.0.tgz",
-      "integrity": "sha512-0mYKnYYe9ZcqMCWhUjItv/oHjvgEsfKvnUTg8sAtnHr3GVy7rGkXCb6d5cSyqrWqL4k81b9CPg3urd+T7aop3A=="
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/points-on-curve/-/points-on-curve-1.0.1.tgz",
+      "integrity": "sha512-3nmX4/LIiyuwGLwuUrfhTlDeQFlAhi7lyK/zcRNGhalwapDWgAGR82bUpmn2mA03vII3fvNCG8jAONzKXwpxAg=="
     },
     "points-on-path": {
       "version": "0.2.1",
@@ -3429,6 +3434,13 @@
       "requires": {
         "path-data-parser": "0.1.0",
         "points-on-curve": "0.2.0"
+      },
+      "dependencies": {
+        "points-on-curve": {
+          "version": "0.2.0",
+          "resolved": "https://registry.npmjs.org/points-on-curve/-/points-on-curve-0.2.0.tgz",
+          "integrity": "sha512-0mYKnYYe9ZcqMCWhUjItv/oHjvgEsfKvnUTg8sAtnHr3GVy7rGkXCb6d5cSyqrWqL4k81b9CPg3urd+T7aop3A=="
+        }
       }
     },
     "prelude-ls": {
diff --git a/package.json b/package.json
index 112971e..1090b3e 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
   "dependencies": {
     "hachure-fill": "^0.5.2",
     "path-data-parser": "^0.1.0",
-    "points-on-curve": "^0.2.0",
+    "points-on-curve": "^1.0.1",
     "points-on-path": "^0.2.1"
   }
 }
\ No newline at end of file
diff --git a/src/generator.ts b/src/generator.ts
index c0ee53a..1a34c38 100644
--- a/src/generator.ts
+++ b/src/generator.ts
@@ -154,9 +154,9 @@ export class RoughGenerator {
                 points[0],
                 points[1],
                 points[2],
-              ]), 10, (1 + o.roughness) / 2));
+              ]).map(p => [p[0], p[1]] as Point), 10, (1 + o.roughness) / 2).map(p => [p[0], p[1]] as Point));
             } else {
-              polyPoints.push(...pointsOnBezierCurves(curveToBezier(points), 10, (1 + o.roughness) / 2));
+              polyPoints.push(...pointsOnBezierCurves(curveToBezier(points), 10, (1 + o.roughness) / 2).map(p => [p[0], p[1]] as Point));
             }
           }
         }