diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0f9c7361..8b8dd424 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -64,7 +64,7 @@ jobs:
       - name: Install mbedTLS Dependencies
         if: ${{ matrix.crypto_backend == 'mbedTLS' }}
         run: |
-          MBEDTLSVER=mbedtls-3.2.1
+          MBEDTLSVER=mbedtls-3.4.0
           curl -L https://github.com/Mbed-TLS/mbedtls/archive/$MBEDTLSVER.tar.gz | tar -xzf -
           cd mbedtls-$MBEDTLSVER
           cmake $TOOLCHAIN_OPTION -DUSE_SHARED_MBEDTLS_LIBRARY=ON -DCMAKE_INSTALL_PREFIX:PATH=../usr .