diff --git a/bcda/client/bluebutton.go b/bcda/client/bluebutton.go
index a1e77c1cf..f38cb8465 100644
--- a/bcda/client/bluebutton.go
+++ b/bcda/client/bluebutton.go
@@ -33,7 +33,7 @@ func init() {
 	filePath := os.Getenv("BCDA_BB_LOG")
 
 	/* #nosec -- 0640 permissions required for Splunk ingestion */
-	file, err := os.OpenFile(filePath, os.O_CREATE|os.O_WRONLY, 0640)
+	file, err := os.OpenFile(filePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0640)
 
 	if err == nil {
 		logger.SetOutput(file)
diff --git a/bcda/logging/middleware.go b/bcda/logging/middleware.go
index 7b1b4b2c7..a4c2d5948 100644
--- a/bcda/logging/middleware.go
+++ b/bcda/logging/middleware.go
@@ -20,7 +20,7 @@ func NewStructuredLogger() func(next http.Handler) http.Handler {
 	filePath := os.Getenv("BCDA_REQUEST_LOG")
 
 	/* #nosec -- 0640 permissions required for Splunk ingestion */
-	file, err := os.OpenFile(filePath, os.O_CREATE|os.O_WRONLY, 0640)
+	file, err := os.OpenFile(filePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0640)
 
 	if err == nil {
 		logger.SetOutput(file)
diff --git a/bcda/main.go b/bcda/main.go
index a0928d570..fd91d3921 100644
--- a/bcda/main.go
+++ b/bcda/main.go
@@ -79,7 +79,7 @@ func init() {
 	filePath := os.Getenv("BCDA_ERROR_LOG")
 
 	/* #nosec -- 0640 permissions required for Splunk ingestion */
-	file, err := os.OpenFile(filePath, os.O_CREATE|os.O_WRONLY, 0640)
+	file, err := os.OpenFile(filePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0640)
 
 	if err == nil {
 		log.SetOutput(file)