diff --git a/internal/api/client/instance/instancepatch_test.go b/internal/api/client/instance/instancepatch_test.go
index e68508fc2..095e2e543 100644
--- a/internal/api/client/instance/instancepatch_test.go
+++ b/internal/api/client/instance/instancepatch_test.go
@@ -109,6 +109,8 @@ func (suite *InstancePatchTestSuite) TestInstancePatch1() {
         "audio/mp2",
         "audio/mp3",
         "video/x-msvideo",
+        "audio/flac",
+        "audio/x-flac",
         "image/png",
         "image/apng",
         "audio/ogg",
@@ -243,6 +245,8 @@ func (suite *InstancePatchTestSuite) TestInstancePatch2() {
         "audio/mp2",
         "audio/mp3",
         "video/x-msvideo",
+        "audio/flac",
+        "audio/x-flac",
         "image/png",
         "image/apng",
         "audio/ogg",
@@ -377,6 +381,8 @@ func (suite *InstancePatchTestSuite) TestInstancePatch3() {
         "audio/mp2",
         "audio/mp3",
         "video/x-msvideo",
+        "audio/flac",
+        "audio/x-flac",
         "image/png",
         "image/apng",
         "audio/ogg",
@@ -562,6 +568,8 @@ func (suite *InstancePatchTestSuite) TestInstancePatch6() {
         "audio/mp2",
         "audio/mp3",
         "video/x-msvideo",
+        "audio/flac",
+        "audio/x-flac",
         "image/png",
         "image/apng",
         "audio/ogg",
@@ -718,6 +726,8 @@ func (suite *InstancePatchTestSuite) TestInstancePatch8() {
         "audio/mp2",
         "audio/mp3",
         "video/x-msvideo",
+        "audio/flac",
+        "audio/x-flac",
         "image/png",
         "image/apng",
         "audio/ogg",
@@ -893,6 +903,8 @@ func (suite *InstancePatchTestSuite) TestInstancePatch9() {
         "audio/mp2",
         "audio/mp3",
         "video/x-msvideo",
+        "audio/flac",
+        "audio/x-flac",
         "image/png",
         "image/apng",
         "audio/ogg",
diff --git a/internal/media/ffmpeg.go b/internal/media/ffmpeg.go
index 6d4c9ac87..ce90028af 100644
--- a/internal/media/ffmpeg.go
+++ b/internal/media/ffmpeg.go
@@ -335,6 +335,8 @@ func (res *result) GetFileType() (gtsmodel.FileType, string) {
 		}
 	case "avi":
 		return gtsmodel.FileTypeVideo, "avi"
+	case "flac":
+		return gtsmodel.FileTypeAudio, "flac"
 	}
 	return gtsmodel.FileTypeUnknown, res.format
 }
diff --git a/internal/media/manager.go b/internal/media/manager.go
index 13bcebe79..0099dfe07 100644
--- a/internal/media/manager.go
+++ b/internal/media/manager.go
@@ -43,6 +43,9 @@ var SupportedMIMETypes = []string{
 
 	"video/x-msvideo", // .avi
 
+	"audio/flac",   // .flac
+	"audio/x-flac", // .flac
+
 	// png types
 	"image/png",  // .png
 	"image/apng", // .apng
diff --git a/internal/typeutils/internaltofrontend_test.go b/internal/typeutils/internaltofrontend_test.go
index 3599e7b56..faae22e65 100644
--- a/internal/typeutils/internaltofrontend_test.go
+++ b/internal/typeutils/internaltofrontend_test.go
@@ -1432,6 +1432,8 @@ func (suite *InternalToFrontendTestSuite) TestInstanceV1ToFrontend() {
         "audio/mp2",
         "audio/mp3",
         "video/x-msvideo",
+        "audio/flac",
+        "audio/x-flac",
         "image/png",
         "image/apng",
         "audio/ogg",
@@ -1570,6 +1572,8 @@ func (suite *InternalToFrontendTestSuite) TestInstanceV2ToFrontend() {
         "audio/mp2",
         "audio/mp3",
         "video/x-msvideo",
+        "audio/flac",
+        "audio/x-flac",
         "image/png",
         "image/apng",
         "audio/ogg",