diff --git a/api/Dockerfile b/api/Dockerfile
index 958af297d..12a84a769 100644
--- a/api/Dockerfile
+++ b/api/Dockerfile
@@ -1,8 +1,8 @@
-FROM alpine:3.8
+FROM alpine:3.11
 
 RUN \
     echo 'installing dependencies' && \
-    apk add                \
+    apk add --no-cache                \
     bash             \
     git             \
     gettext            \