diff --git a/src/map.rs b/src/map.rs
index d97d94f..1d92627 100644
--- a/src/map.rs
+++ b/src/map.rs
@@ -277,6 +277,13 @@ matcher_map!(
         "m4a",
         matchers::audio::is_m4a
     ),
+    // has to come before ogg
+    (
+        MatcherType::Audio,
+        "audio/opus",
+        "opus",
+        matchers::audio::is_ogg_opus
+    ),
     (
         MatcherType::Audio,
         "audio/ogg",
diff --git a/src/matchers/audio.rs b/src/matchers/audio.rs
index 24746d9..73cfed4 100644
--- a/src/matchers/audio.rs
+++ b/src/matchers/audio.rs
@@ -29,6 +29,23 @@ pub fn is_ogg(buf: &[u8]) -> bool {
     buf.len() > 3 && buf[0] == 0x4F && buf[1] == 0x67 && buf[2] == 0x67 && buf[3] == 0x53
 }
 
+/// Returns whether a buffer is OGG Opus data.
+pub fn is_ogg_opus(buf: &[u8]) -> bool {
+    if !is_ogg(buf) {
+        return false;
+    }
+
+    buf.len() > 35
+        && buf[28] == 0x4F
+        && buf[29] == 0x70
+        && buf[30] == 0x75
+        && buf[31] == 0x73
+        && buf[32] == 0x48
+        && buf[33] == 0x65
+        && buf[34] == 0x61
+        && buf[35] == 0x64
+}
+
 /// Returns whether a buffer is FLAC data.
 pub fn is_flac(buf: &[u8]) -> bool {
     buf.len() > 3 && buf[0] == 0x66 && buf[1] == 0x4C && buf[2] == 0x61 && buf[3] == 0x43
diff --git a/testdata/sample_48kbps.opus b/testdata/sample_48kbps.opus
new file mode 100644
index 0000000..c8d63de
Binary files /dev/null and b/testdata/sample_48kbps.opus differ
diff --git a/tests/audio.rs b/tests/audio.rs
index 6352fdb..b07c7c4 100644
--- a/tests/audio.rs
+++ b/tests/audio.rs
@@ -3,3 +3,4 @@ mod common;
 test_format!(Audio, "audio/mpeg", "mp3", mp3, "sample.mp3");
 test_format!(Audio, "audio/x-dsf", "dsf", dsf, "sample.dsf");
 test_format!(Audio, "audio/x-ape", "ape", ape, "sample.ape");
+test_format!(Audio, "audio/opus", "opus", opus, "sample_48kbps.opus");