diff --git a/testing/opus/build b/testing/opus/build
new file mode 100755
index 00000000..23f46765
--- /dev/null
+++ b/testing/opus/build
@@ -0,0 +1,9 @@
+#!/bin/sh -e
+
+./configure \
+    --prefix=/usr \
+    --enable-custom-modes \
+    --enable-float-approx
+
+make
+make DESTDIR="$1" install
diff --git a/testing/opus/checksums b/testing/opus/checksums
new file mode 100644
index 00000000..77a9ad97
--- /dev/null
+++ b/testing/opus/checksums
@@ -0,0 +1 @@
+65b58e1e25b2a114157014736a3d9dfeaad8d41be1c8179866f144a2fb44ff9d  opus-1.3.1.tar.gz
diff --git a/testing/opus/sources b/testing/opus/sources
new file mode 100644
index 00000000..d11f0722
--- /dev/null
+++ b/testing/opus/sources
@@ -0,0 +1 @@
+https://archive.mozilla.org/pub/opus/opus-1.3.1.tar.gz
diff --git a/testing/opus/version b/testing/opus/version
new file mode 100644
index 00000000..957d07e2
--- /dev/null
+++ b/testing/opus/version
@@ -0,0 +1 @@
+1.3.1 1