diff --git a/Cargo.lock b/Cargo.lock
index ec8ed09f45..d167434831 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -814,6 +814,7 @@ dependencies = [
  "elf",
  "openssl",
  "rand",
+ "regex",
  "zerocopy",
 ]
 
diff --git a/test/Cargo.toml b/test/Cargo.toml
index 40ce58649e..3c21d59090 100644
--- a/test/Cargo.toml
+++ b/test/Cargo.toml
@@ -20,6 +20,7 @@ caliptra-runtime = { workspace = true, default-features = false }
 elf.workspace = true
 openssl.workspace = true
 rand.workspace = true
+regex.workspace = true
 zerocopy.workspace = true
 caliptra-hw-model.workspace = true
 dpe.workspace = true
diff --git a/test/tests/caliptra_integration_tests/smoke_test.rs b/test/tests/caliptra_integration_tests/smoke_test.rs
index 2d61625e56..e348407b5d 100644
--- a/test/tests/caliptra_integration_tests/smoke_test.rs
+++ b/test/tests/caliptra_integration_tests/smoke_test.rs
@@ -20,6 +20,7 @@ use openssl::nid::Nid;
 use openssl::sha::{sha384, Sha384};
 use rand::rngs::StdRng;
 use rand::SeedableRng;
+use regex::Regex;
 use std::mem;
 use zerocopy::AsBytes;
 
@@ -31,6 +32,15 @@ fn assert_output_contains(haystack: &str, needle: &str) {
     );
 }
 
+#[track_caller]
+fn assert_output_contains_regex(haystack: &str, needle: &str) {
+    let re = Regex::new(needle).unwrap();
+    assert! {
+        re.is_match(haystack),
+        "Expected substring in output not found: {needle}"
+    }
+}
+
 #[test]
 fn retrieve_csr_test() {
     const GENERATE_IDEVID_CSR: u32 = 1;
@@ -177,7 +187,7 @@ fn smoke_test() {
         assert_output_contains(&output, "[kat] sha1");
         assert_output_contains(&output, "[kat] SHA2-256");
         assert_output_contains(&output, "[kat] SHA2-384");
-        assert_output_contains(&output, "[kat] SHA2-512-ACC");
+        assert_output_contains_regex(&output, r"\[kat\] SHA2-(384|512)-ACC");
         assert_output_contains(&output, "[kat] HMAC-384");
         assert_output_contains(&output, "[kat] LMS");
         assert_output_contains(&output, "[kat] --");