diff --git a/platypush/install/requirements/alpine.txt b/platypush/install/requirements/alpine.txt
index 77f32738eb..891c0a6a63 100644
--- a/platypush/install/requirements/alpine.txt
+++ b/platypush/install/requirements/alpine.txt
@@ -6,6 +6,7 @@ py3-docutils
 py3-flask
 py3-greenlet
 py3-magic
+py3-marshmallow
 py3-mypy-extensions
 py3-psutil
 py3-redis
diff --git a/platypush/install/scripts/alpine/PKGCMD b/platypush/install/scripts/alpine/PKGCMD
index eba0c3d562..09f6fe5e4c 100644
--- a/platypush/install/scripts/alpine/PKGCMD
+++ b/platypush/install/scripts/alpine/PKGCMD
@@ -1 +1 @@
-apk add --update --no-interactive --no-cache
+apk add --update --no-interactive --no-cache --repository=http://dl-cdn.alpinelinux.org/alpine/edge/testing/