diff --git a/services/security/code_scanner.go b/services/security/code_scanner.go
index 61788173fe..633fcb0a24 100644
--- a/services/security/code_scanner.go
+++ b/services/security/code_scanner.go
@@ -160,7 +160,7 @@ var DefaultCodeRules = []CodeRule{
 	{
 		ID: "deserialize-yaml-py", Title: "Insecure Deserialization: yaml.load() (Python)",
 		Severity: security_model.SeverityHigh, CWE: "CWE-502",
-		Pattern:     regexp.MustCompile(`yaml\.load\s*\([^)]*(?:Loader\s*=\s*yaml\.(?:Unsafe|Full)Loader|[^)]*\)(?!\s*#))`),
+		Pattern:     regexp.MustCompile(`(?i)yaml\.load\s*\(`),
 		Description: "yaml.load() without SafeLoader allows arbitrary code execution — use yaml.safe_load()",
 		Languages:   []string{".py"},
 	},
diff --git a/services/security/code_scanner_test.go b/services/security/code_scanner_test.go
new file mode 100644
index 0000000000..55c6a2c124
--- /dev/null
+++ b/services/security/code_scanner_test.go
@@ -0,0 +1,23 @@
+// Copyright (C) 2026 Moko Consulting <hello@mokoconsulting.tech>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package security
+
+import "testing"
+
+// TestDefaultCodeRulesCompile forces the package init, which builds every scanner
+// rule's regexp via regexp.MustCompile, and asserts each pattern is present. Go's
+// regexp engine is RE2 and rejects Perl-only constructs (lookahead/lookbehind/
+// backreferences) by panicking in MustCompile at init — which crash-loops the
+// server at startup. This test executes that init so such a pattern fails CI here
+// instead of on a live deploy.
+func TestDefaultCodeRulesCompile(t *testing.T) {
+	if len(DefaultCodeRules) == 0 {
+		t.Fatal("DefaultCodeRules is empty")
+	}
+	for _, r := range DefaultCodeRules {
+		if r.Pattern == nil {
+			t.Errorf("rule %q has a nil Pattern", r.ID)
+		}
+	}
+}