diff --git a/gulpfile.js b/gulpfile.js
index e2b15d39b..def76e5c3 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -39,6 +39,7 @@ const pythonToMove = [
   "./src/microbit/!(test)/**/*",
   "./src/*.py",
   "./src/common/*.py",
+  "./src/dev-requirements.txt",
   "./src/requirements.txt",
   "./src/templates/*.*"
 ];
diff --git a/src/dev-requirements.txt b/src/dev-requirements.txt
new file mode 100644
index 000000000..26f334b51
--- /dev/null
+++ b/src/dev-requirements.txt
@@ -0,0 +1,3 @@
+-r ./requirements.txt
+black==19.10b0
+pytest==5.0.1
\ No newline at end of file
diff --git a/src/requirements.txt b/src/requirements.txt
index c12ba6b14..3ed651739 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -1,6 +1,4 @@
-black==19.10b0
 playsound==1.2.2
-pytest==5.0.1
 applicationinsights==0.11.9
 python-socketio==4.3.1
 requests==2.22.0