diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 906ada5..b620b0d 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -1,4 +1,4 @@
-FROM swift:5.1.4
+FROM swift:5.1.5
 
 # Or your actual UID, GID on Linux if not the default 1000
 ARG USERNAME=vscode
diff --git a/Makefile b/Makefile
index a2f137f..1a1b504 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-SWIFT_VERSION?=5.1.4
+SWIFT_VERSION?=5.1.5
 
 DOCKER_TAG=nio-swift:$(SWIFT_VERSION)
 SWIFT_DOCKER_IMAGE=$(DOCKER_TAG)
diff --git a/Package.resolved b/Package.resolved
index ba6b066..aacc9d0 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -6,8 +6,8 @@
         "repositoryURL": "https://github.com/swift-server/async-http-client.git",
         "state": {
           "branch": null,
-          "revision": "48e284d1ea6d0e8baac1af1c4ad8bd298670caf6",
-          "version": "1.0.1"
+          "revision": "e2636a4c24e646d3e480fc666da0c090818beb09",
+          "version": "1.1.0"
         }
       },
       {
@@ -24,8 +24,8 @@
         "repositoryURL": "https://github.com/apple/swift-nio.git",
         "state": {
           "branch": null,
-          "revision": "df9390006bce7da1b6273f804d3acbbfdfcc6154",
-          "version": "2.13.1"
+          "revision": "a27a07719ca785bcaca019a5b9fe1814b981b4a2",
+          "version": "2.15.0"
         }
       },
       {
@@ -42,8 +42,8 @@
         "repositoryURL": "https://github.com/apple/swift-nio-ssl.git",
         "state": {
           "branch": null,
-          "revision": "cf54f5c1db1c3740a6c7d662dc8569c150c3846c",
-          "version": "2.6.0"
+          "revision": "af46d9b58fafbb76f9b01177568d435a1b024f99",
+          "version": "2.6.2"
         }
       }
     ]
diff --git a/docker/5.1.4/Dockerfile b/docker/5.1.5/Dockerfile
similarity index 73%
rename from docker/5.1.4/Dockerfile
rename to docker/5.1.5/Dockerfile
index 8aef938..ff7286f 100644
--- a/docker/5.1.4/Dockerfile
+++ b/docker/5.1.5/Dockerfile
@@ -1,4 +1,4 @@
-FROM swift:5.1.4 as builder
+FROM swift:5.1.5 as builder
 
 RUN apt-get -qq update && apt-get -q -y install \
     libssl-dev libicu-dev