diff --git a/sun-motion-simulator/package-lock.json b/sun-motion-simulator/package-lock.json
index 04db50f3a..940055b6a 100644
--- a/sun-motion-simulator/package-lock.json
+++ b/sun-motion-simulator/package-lock.json
@@ -16,7 +16,7 @@
         "react-dom": "~19.2.0",
         "react-range-step-input": "^1.2.1",
         "solar-calculator": "^0.3.0",
-        "three": "~0.155.0"
+        "three": "~0.181.1"
       },
       "devDependencies": {
         "@babel/core": "^7.5.5",
@@ -11238,9 +11238,9 @@
       "dev": true
     },
     "node_modules/three": {
-      "version": "0.155.0",
-      "resolved": "https://registry.npmjs.org/three/-/three-0.155.0.tgz",
-      "integrity": "sha512-sNgCYmDijnIqkD/bMfk+1pHg3YzsxW7V2ChpuP6HCQ8NiZr3RufsXQr8M3SSUMjW4hG+sUk7YbyuY0DncaDTJQ=="
+      "version": "0.181.1",
+      "resolved": "https://registry.npmjs.org/three/-/three-0.181.1.tgz",
+      "integrity": "sha512-bz9xZUQMw3pJbjKy7roiwXWgAp+oVUa+4k5o0oBAQ+IFJuru1xzvtk63h6k72XZanXS/SgoEhV6927Vgazyq2w=="
     },
     "node_modules/thunky": {
       "version": "1.1.0",
@@ -20355,9 +20355,9 @@
       "dev": true
     },
     "three": {
-      "version": "0.155.0",
-      "resolved": "https://registry.npmjs.org/three/-/three-0.155.0.tgz",
-      "integrity": "sha512-sNgCYmDijnIqkD/bMfk+1pHg3YzsxW7V2ChpuP6HCQ8NiZr3RufsXQr8M3SSUMjW4hG+sUk7YbyuY0DncaDTJQ=="
+      "version": "0.181.1",
+      "resolved": "https://registry.npmjs.org/three/-/three-0.181.1.tgz",
+      "integrity": "sha512-bz9xZUQMw3pJbjKy7roiwXWgAp+oVUa+4k5o0oBAQ+IFJuru1xzvtk63h6k72XZanXS/SgoEhV6927Vgazyq2w=="
     },
     "thunky": {
       "version": "1.1.0",
diff --git a/sun-motion-simulator/package.json b/sun-motion-simulator/package.json
index 8ee087727..da75b2da2 100644
--- a/sun-motion-simulator/package.json
+++ b/sun-motion-simulator/package.json
@@ -32,7 +32,7 @@
     "react-dom": "~19.2.0",
     "react-range-step-input": "^1.2.1",
     "solar-calculator": "^0.3.0",
-    "three": "~0.155.0"
+    "three": "~0.181.1"
   },
   "devDependencies": {
     "@babel/core": "^7.5.5",