diff --git a/.github/workflows/make-wasm.yml b/.github/workflows/make-wasm.yml
index 5c4a283a8..3b2b8ed8d 100644
--- a/.github/workflows/make-wasm.yml
+++ b/.github/workflows/make-wasm.yml
@@ -38,11 +38,11 @@ jobs:
 
       - name: docker pull
         run: |
-          docker pull emscripten/emsdk:latest
+          docker pull emscripten/emsdk:3.1.43
 
       - name: build wasm
         run: |
-          docker run --rm -v ${PWD}/main:/src emscripten/emsdk:latest node script/wasm_build.js ${{ matrix.edition }}
+          docker run --rm -v ${PWD}/main:/src emscripten/emsdk:3.1.43 node script/wasm_build.js ${{ matrix.edition }}
 
       - uses: actions/upload-artifact@v2
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index cfa73adf0..300e31c80 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -636,11 +636,11 @@ jobs:
 
       - name: docker pull
         run: |
-          docker pull emscripten/emsdk:latest
+          docker pull emscripten/emsdk:3.1.43
 
       - name: build wasm
         run: |
-          docker run --rm -v ${PWD}/main:/src emscripten/emsdk:latest node script/wasm_build.js ${{ matrix.edition }}
+          docker run --rm -v ${PWD}/main:/src emscripten/emsdk:3.1.43 node script/wasm_build.js ${{ matrix.edition }}
 
       - uses: actions/upload-artifact@v2
         with:
@@ -666,11 +666,11 @@ jobs:
 
       - name: docker pull
         run: |
-          docker pull emscripten/emsdk:latest
+          docker pull emscripten/emsdk:3.1.43
 
       - name: build wasm
         run: |
-          docker run --rm -v ${PWD}/main:/src emscripten/emsdk:latest node script/wasm_build.js ${{ matrix.edition }}
+          docker run --rm -v ${PWD}/main:/src emscripten/emsdk:3.1.43 node script/wasm_build.js ${{ matrix.edition }}
 
       - uses: actions/upload-artifact@v2
         with:
@@ -696,11 +696,11 @@ jobs:
 
       - name: docker pull
         run: |
-          docker pull emscripten/emsdk:latest
+          docker pull emscripten/emsdk:3.1.43
 
       - name: build wasm
         run: |
-          docker run --rm -v ${PWD}/main:/src emscripten/emsdk:latest node script/wasm_build.js ${{ matrix.edition }}
+          docker run --rm -v ${PWD}/main:/src emscripten/emsdk:3.1.43 node script/wasm_build.js ${{ matrix.edition }}
 
       - uses: actions/upload-artifact@v2
         with:
diff --git a/script/wasm_build.cmd b/script/wasm_build.cmd
index af6faf7ab..31bd496d9 100644
--- a/script/wasm_build.cmd
+++ b/script/wasm_build.cmd
@@ -1,5 +1,5 @@
 @echo off
 cd %~dp0
 cd ..
-docker pull emscripten/emsdk:latest
-docker run --rm -v %CD%:/src emscripten/emsdk:latest node script/wasm_build.js
+docker pull emscripten/emsdk:3.1.43
+docker run --rm -v %CD%:/src emscripten/emsdk:3.1.43 node script/wasm_build.js
diff --git a/script/wasm_build.sh b/script/wasm_build.sh
index 9a9fa4c84..9793faf95 100755
--- a/script/wasm_build.sh
+++ b/script/wasm_build.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 pushd `dirname $0`
 pushd ../
-docker pull emscripten/emsdk:latest
-docker run --rm -v ${PWD}:/src emscripten/emsdk:latest node script/wasm_build.js
+docker pull emscripten/emsdk:3.1.43
+docker run --rm -v ${PWD}:/src emscripten/emsdk:3.1.43 node script/wasm_build.js
 popd
 popd
diff --git a/script/wasm_docker_build.js b/script/wasm_docker_build.js
index ad075a255..1b282f038 100755
--- a/script/wasm_docker_build.js
+++ b/script/wasm_docker_build.js
@@ -14,7 +14,7 @@ if(!fs.existsSync("source/Makefile")) {
 (async () => {
   await new Promise((resolve) => {
     let child = exec(
-      `docker pull emscripten/emsdk:latest`,
+      `docker pull emscripten/emsdk:3.1.43`,
       { cwd: cwd, stdio: "inherit" },
       (_error, _stdout, _stderr) => { resolve(); },
     );
@@ -23,7 +23,7 @@ if(!fs.existsSync("source/Makefile")) {
   });
   await new Promise((resolve) => {
     let child = exec(
-      `docker run --rm -v ${cwd}:/src emscripten/emsdk:latest node script/wasm_build.js ${args.join(" ")}`,
+      `docker run --rm -v ${cwd}:/src emscripten/emsdk:3.1.43 node script/wasm_build.js ${args.join(" ")}`,
       { cwd: cwd, stdio: "inherit" },
       (_error, _stdout, _stderr) => { resolve(); },
     );