diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3a43138a6..4fa2107b4 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -138,7 +138,7 @@ jobs:
       # Documented sim/login CI test credential (not a production secret).
       # Used when CONFIG_BOARD_ETC_ROMFS_PASSWD_ENABLE=y and defconfig omits
       # the password.  See nuttx tools/update_romfs_password.sh.
-      NUTTX_ROMFS_PASSWD_PASSWORD: NuttXSimLogin1
+      NUTTX_ROMFS_PASSWD_PASSWORD: NuttXSimLogin1!
 
     strategy:
       max-parallel: 12
@@ -183,10 +183,10 @@ jobs:
         uses: ./sources/nuttx/.github/actions/ci-container
         env:
           BLOBDIR: /tools/blobs
-          NUTTX_ROMFS_PASSWD_PASSWORD: NuttXSimLogin1
+          NUTTX_ROMFS_PASSWD_PASSWORD: NuttXSimLogin1!
         with:
           run: |
-            export NUTTX_ROMFS_PASSWD_PASSWORD=NuttXSimLogin1
+            export NUTTX_ROMFS_PASSWD_PASSWORD=NuttXSimLogin1!
             export ARTIFACTDIR=`pwd`/buildartifacts
 
             for i in 1 2 3; do
@@ -302,7 +302,7 @@ jobs:
     needs: macOS-Arch
     if: ${{ needs.macOS-Arch.outputs.skip_all_builds != '1' }}
     env:
-      NUTTX_ROMFS_PASSWD_PASSWORD: NuttXSimLogin1
+      NUTTX_ROMFS_PASSWD_PASSWORD: NuttXSimLogin1!
     strategy:
       max-parallel: 2
       matrix:
@@ -337,7 +337,7 @@ jobs:
       - name: Run Builds
         run: |
           echo "::add-matcher::sources/nuttx/.github/gcc.json"
-          export NUTTX_ROMFS_PASSWD_PASSWORD=NuttXSimLogin1
+          export NUTTX_ROMFS_PASSWD_PASSWORD=NuttXSimLogin1!
           export ARTIFACTDIR=`pwd`/buildartifacts
           cd sources/nuttx/tools/ci
           ./cibuild.sh -i -c -A -R testlist/${{matrix.boards}}.dat