diff --git a/bucket/emscripten.json b/bucket/emscripten.json
index fc996312bc..57cf2083e6 100644
--- a/bucket/emscripten.json
+++ b/bucket/emscripten.json
@@ -1,6 +1,6 @@
 {
     "##": ".bat won't be able to modify shell sessions of PowerShell, Fish, Bash etc. Therefore env_add_path is required.",
-    "version": "3.1.65",
+    "version": "3.1.66",
     "description": "LLVM to WebAssembly compiler. Compiles C/C++ to WebAssembly that can be run on most web browsers.",
     "homepage": "https://emscripten.org/",
     "license": "MIT|NCSA",
@@ -10,11 +10,11 @@
     ],
     "architecture": {
         "64bit": {
-            "url": "https://github.com/emscripten-core/emsdk/archive/refs/tags/3.1.65.zip",
-            "hash": "4edf9424ae092c18baf7c4a119d889cb78603edcda505a359197f75a8df8251a"
+            "url": "https://github.com/emscripten-core/emsdk/archive/refs/tags/3.1.66.zip",
+            "hash": "16c76de9e617b53b00955b0c70adc02114d00ce925beeeb051f7840a3883ff83"
         }
     },
-    "extract_dir": "emsdk-3.1.65",
+    "extract_dir": "emsdk-3.1.66",
     "pre_install": "if(!(Test-Path \"$persist_dir\\.emscripten\")) {New-Item \"$dir\\.emscripten\" -ItemType File | Out-Null}",
     "env_add_path": ".",
     "shortcuts": [