diff --git a/src/ubuntu/18.04/webassembly-net8/Dockerfile b/src/ubuntu/18.04/webassembly-net8/Dockerfile
index abf9e34fd..d2e0e11af 100644
--- a/src/ubuntu/18.04/webassembly-net8/Dockerfile
+++ b/src/ubuntu/18.04/webassembly-net8/Dockerfile
@@ -24,7 +24,7 @@ RUN locale-gen en_US.UTF-8
 RUN npm i -g typescript
 
 # Install Emscripten toolchain
-ENV EMSCRIPTEN_VERSION=3.1.30
+ENV EMSCRIPTEN_VERSION=3.1.34
 ENV EMSCRIPTEN_PATH=/usr/local/emscripten
 ENV EMSDK_PATH=/usr/local/emscripten/emsdk
 
diff --git a/src/ubuntu/20.04/webassembly-net8/Dockerfile b/src/ubuntu/20.04/webassembly-net8/Dockerfile
index b2edbea77..b547ff47e 100644
--- a/src/ubuntu/20.04/webassembly-net8/Dockerfile
+++ b/src/ubuntu/20.04/webassembly-net8/Dockerfile
@@ -25,7 +25,7 @@ RUN locale-gen en_US.UTF-8
 RUN npm i -g typescript
 
 # Install Emscripten toolchain
-ENV EMSCRIPTEN_VERSION=3.1.30
+ENV EMSCRIPTEN_VERSION=3.1.34
 ENV EMSCRIPTEN_PATH=/usr/local/emscripten
 ENV EMSDK_PATH=/usr/local/emscripten/emsdk
 
diff --git a/src/windowsservercore/ltsc2022/helix/webassembly-net8/Dockerfile b/src/windowsservercore/ltsc2022/helix/webassembly-net8/Dockerfile
index ca81717c9..4a2e4e6a4 100644
--- a/src/windowsservercore/ltsc2022/helix/webassembly-net8/Dockerfile
+++ b/src/windowsservercore/ltsc2022/helix/webassembly-net8/Dockerfile
@@ -24,7 +24,7 @@ RUN curl -SL --output %TEMP%\%GIT_INSTALLER% https://github.com/git-for-windows/
 RUN certutil -generateSSTFromWU roots.sst && certutil -addstore -f root roots.sst && del roots.sst
 
 # Install Emscripten toolchain
-ENV EMSCRIPTEN_VERSION=3.1.30
+ENV EMSCRIPTEN_VERSION=3.1.34
 ENV EMSCRIPTEN_PATH="C:\emscripten"
 ENV EMSDK_PATH="C:\emscripten\emsdk"