diff --git a/contrib/ci/arch.sh b/contrib/ci/arch.sh
index 81522ab51..07ae24330 100755
--- a/contrib/ci/arch.sh
+++ b/contrib/ci/arch.sh
@@ -19,7 +19,7 @@ popd
 chown nobody . -R
 
 # install and run TPM simulator necessary for plugins/uefi/uefi-self-test
-pacman -S --noconfirm swtpm tpm2-tools
+pacman -Syu --noconfirm swtpm tpm2-tools
 swtpm socket --tpm2 --server port=2321 --ctrl type=tcp,port=2322 --flags not-need-init --tpmstate "dir=$PWD" &
 trap "kill $!" EXIT
 # extend a PCR0 value for test suite