diff --git a/Dockerfile.trunk b/Dockerfile.trunk
index e7dd53786c2a0d33ac7e47ffd22d2d0d01e915a8..d142d802dd514ddcffa7144dad905dd4aab44dbf 100644
--- a/Dockerfile.trunk
+++ b/Dockerfile.trunk
@@ -1,5 +1,5 @@
 # development image
-ARG BASE=alpine:3.13
+ARG BASE=alpine:3.15
 FROM $BASE AS builder
 
 # install development dependencies
diff --git a/Dockerfile.v0.14 b/Dockerfile.v0.14
index 0e7006e51a66c4196d04a33e306dda464fc7174e..0eb8a6941bce8fca4171fc81b239b125a56ab043 100644
--- a/Dockerfile.v0.14
+++ b/Dockerfile.v0.14
@@ -1,5 +1,5 @@
 # development image
-ARG BASE=alpine:3.13
+ARG BASE=alpine:3.15
 FROM $BASE AS builder
 
 # install development dependencies