diff --git a/.github/workflows/sim.yaml b/.github/workflows/sim.yaml
index 79765fbd..c1d91a67 100644
--- a/.github/workflows/sim.yaml
+++ b/.github/workflows/sim.yaml
@@ -44,6 +44,7 @@ jobs:
         - "sig-rsa validate-primary-slot ram-load multiimage"
         - "sig-rsa validate-primary-slot direct-xip multiimage"
         - "sig-ecdsa hw-rollback-protection multiimage"
+        - "sig-ecdsa-psa,sig-ecdsa-psa sig-p384"
         - "ram-load enc-aes256-kw multiimage"
         - "ram-load enc-aes256-kw sig-ecdsa-mbedtls multiimage"
     runs-on: ubuntu-latest
diff --git a/ci/sim_run.sh b/ci/sim_run.sh
index 59d65e10..7a9ff2de 100755
--- a/ci/sim_run.sh
+++ b/ci/sim_run.sh
@@ -43,10 +43,20 @@ fi
 if [[ ! -z $MULTI_FEATURES ]]; then
   IFS=','
   read -ra multi_features <<< "$MULTI_FEATURES"
+
+  # psa crypto tests require single thread mode
+  TEST_ARGS=''
+  for features in "${multi_features[@]}"; do
+    if [[ $features =~ "psa" ]]; then
+        TEST_ARGS='--test-threads=1'
+        break
+    fi
+  done
+
   for features in "${multi_features[@]}"; do
     echo "Running cargo for features=\"${features}\""
-    time cargo test --no-run --features "$features"
-    time cargo test --features "$features"
+    time cargo test --no-run --features "$features" -- $TEST_ARGS
+    time cargo test --features "$features" -- $TEST_ARGS
     rc=$? && [ $rc -ne 0 ] && EXIT_CODE=$rc
   done
 fi