diff --git a/changelog/unreleased/add-mimetype-for-sb3-files.md b/changelog/unreleased/add-mimetype-for-sb3-files.md
new file mode 100644
index 0000000000..c3112354a3
--- /dev/null
+++ b/changelog/unreleased/add-mimetype-for-sb3-files.md
@@ -0,0 +1,5 @@
+Enhancement: Add mimetype for sb3 files
+
+We've added the matching mimetype for sb3 files
+
+https://github.com/cs3org/reva/pull/4693
diff --git a/pkg/mime/mime.go b/pkg/mime/mime.go
index ed94566a9b..a6feda944f 100644
--- a/pkg/mime/mime.go
+++ b/pkg/mime/mime.go
@@ -794,6 +794,7 @@ var mimeTypes = map[string]string{
 	"s3m":                      "audio/s3m",
 	"saf":                      "application/vnd.yamaha.smaf-audio",
 	"sass":                     "text/x-sass",
+	"sb3":                      "application/x.scratch.sb3",
 	"sbml":                     "application/sbml+xml",
 	"sc":                       "application/vnd.ibm.secure-container",
 	"scd":                      "application/x-msschedule",