diff --git a/Dockerfile b/Dockerfile
index 16eb7fa4..561ee77e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # Note: We use 22.04 since AppImage recommends building on the
 # oldest configuration that you support
 
-ARG SWIFT_VERSION=6.4.1
+ARG SWIFT_VERSION=6.4.2
 
 FROM swift:${SWIFT_VERSION}-jammy AS build-base
 
diff --git a/netlify.toml b/netlify.toml
index 7819e917..995a8622 100644
--- a/netlify.toml
+++ b/netlify.toml
@@ -5,7 +5,7 @@
   base = "Documentation/"
   publish = "xtool.docc/.docc-build"
   command = "./build.sh"
-  environment = { SWIFT_VERSION = "6.4.1" }
+  environment = { SWIFT_VERSION = "6.4.2" }
   ignore = "git -C .. diff --quiet $CACHED_COMMIT_REF $COMMIT_REF -- Documentation netlify.toml"
 
 [[redirects]]