diff --git a/Makefile b/Makefile
index da4a205..7844cea 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-SWIFT_VERSION?=5.2.1
+SWIFT_VERSION?=5.2.3
 
 DOCKER_TAG=nio-swift:$(SWIFT_VERSION)
 SWIFT_DOCKER_IMAGE=$(DOCKER_TAG)
diff --git a/docker/5.2.1/Dockerfile b/docker/5.2.3/Dockerfile
similarity index 73%
rename from docker/5.2.1/Dockerfile
rename to docker/5.2.3/Dockerfile
index a49ca97..abca1df 100644
--- a/docker/5.2.1/Dockerfile
+++ b/docker/5.2.3/Dockerfile
@@ -1,4 +1,4 @@
-FROM swift:5.2.1 as builder
+FROM swift:5.2.3 as builder
 
 RUN apt-get -qq update && apt-get -q -y install \
     libssl-dev libicu-dev
diff --git a/docker/5.2.1/swift-shared-libraries.txt b/docker/5.2.3/swift-shared-libraries.txt
similarity index 100%
rename from docker/5.2.1/swift-shared-libraries.txt
rename to docker/5.2.3/swift-shared-libraries.txt