diff --git a/grype/presenter/internal/test_helpers.go b/grype/presenter/internal/test_helpers.go
index 2bfafbc2..6e70ed87 100644
--- a/grype/presenter/internal/test_helpers.go
+++ b/grype/presenter/internal/test_helpers.go
@@ -1,6 +1,7 @@
 package internal
 
 import (
+	"os"
 	"regexp"
 	"testing"
 
@@ -92,8 +93,21 @@ func Redact(s []byte) []byte {
 	cycloneDxBomRefPattern := regexp.MustCompile(`[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}`)
 	tempDirPattern := regexp.MustCompile(`/tmp/[^"]+`)
 	macTempDirPattern := regexp.MustCompile(`/var/folders/[^"]+`)
+	// nix build dir isn't always /build so we'll identify it by $TMP
+	nixDir := os.Getenv("TMP")
+	if nixDir == "" {
+		panic("missing $TMP for identifying nix build dir")
+	}
+	end := regexp.QuoteMeta(nixDir)
+	pattern := `[^"]+`
+	// add slash prefix to pattern only if required
+	// don't use strings lib to reduce chance of merge conflicts above
+	if end[len(end)-1] != '/' {
+		pattern = "/" + pattern
+	}
+	nixBuildDirPattern := regexp.MustCompile(end + pattern)
 
-	for _, pattern := range []*regexp.Regexp{serialPattern, rfc3339Pattern, refPattern, uuidPattern, cycloneDxBomRefPattern, tempDirPattern, macTempDirPattern} {
+	for _, pattern := range []*regexp.Regexp{serialPattern, rfc3339Pattern, refPattern, uuidPattern, cycloneDxBomRefPattern, tempDirPattern, macTempDirPattern, nixBuildDirPattern} {
 		s = pattern.ReplaceAll(s, []byte(""))
 	}
 	return s