diff --git a/nightly-main/debian/12/Dockerfile b/nightly-main/debian/12/Dockerfile
index d8ef580b..4a0d719f 100644
--- a/nightly-main/debian/12/Dockerfile
+++ b/nightly-main/debian/12/Dockerfile
@@ -23,7 +23,7 @@ RUN export DEBIAN_FRONTEND=noninteractive DEBCONF_NONINTERACTIVE_SEEN=true && ap
 
 ARG SWIFT_SIGNING_KEY=E813C892820A6FA13755B268F167DF1ACF9CE069
 ARG SWIFT_PLATFORM=debian12
-ARG SWIFT_VERSION=6.2
+ARG SWIFT_VERSION=6.3
 ARG SWIFT_WEBROOT=https://download.swift.org/development
 ARG SWIFT_WEBROOT="$SWIFT_WEBROOT/$SWIFT_PLATFORM"
 ARG SWIFT_PREFIX=/opt/swift/${SWIFT_VERSION}
diff --git a/nightly-main/debian/12/buildx/Dockerfile b/nightly-main/debian/12/buildx/Dockerfile
index 080c6a36..d9c9654d 100644
--- a/nightly-main/debian/12/buildx/Dockerfile
+++ b/nightly-main/debian/12/buildx/Dockerfile
@@ -25,7 +25,7 @@ RUN export DEBIAN_FRONTEND=noninteractive DEBCONF_NONINTERACTIVE_SEEN=true && ap
 
 ARG SWIFT_SIGNING_KEY=E813C892820A6FA13755B268F167DF1ACF9CE069
 ARG SWIFT_PLATFORM=debian12
-ARG SWIFT_VERSION=6.2
+ARG SWIFT_VERSION=6.3
 ARG SWIFT_WEBROOT=https://download.swift.org/development
 ARG SWIFT_WEBROOT="$SWIFT_WEBROOT/$SWIFT_PLATFORM"
 ARG SWIFT_PREFIX=/opt/swift/${SWIFT_VERSION}
diff --git a/nightly-main/fedora/39/Dockerfile b/nightly-main/fedora/39/Dockerfile
index 68bb73de..ab84fa21 100644
--- a/nightly-main/fedora/39/Dockerfile
+++ b/nightly-main/fedora/39/Dockerfile
@@ -21,7 +21,7 @@ RUN yum -y install \
 
 ARG SWIFT_SIGNING_KEY=E813C892820A6FA13755B268F167DF1ACF9CE069
 ARG SWIFT_PLATFORM=fedora39
-ARG SWIFT_VERSION=6.2
+ARG SWIFT_VERSION=6.3
 ARG SWIFT_BRANCH=swift-${SWIFT_VERSION}-release
 ARG SWIFT_TAG=swift-${SWIFT_VERSION}-RELEASE
 ARG SWIFT_WEBROOT=https://download.swift.org/development
diff --git a/nightly-main/fedora/39/buildx/Dockerfile b/nightly-main/fedora/39/buildx/Dockerfile
index e7d8208b..b76974f2 100644
--- a/nightly-main/fedora/39/buildx/Dockerfile
+++ b/nightly-main/fedora/39/buildx/Dockerfile
@@ -21,7 +21,7 @@ RUN yum -y install \
 
 ARG SWIFT_SIGNING_KEY=E813C892820A6FA13755B268F167DF1ACF9CE069
 ARG SWIFT_PLATFORM=fedora39
-ARG SWIFT_VERSION=6.2
+ARG SWIFT_VERSION=6.3
 ARG SWIFT_BRANCH=swift-${SWIFT_VERSION}-release
 ARG SWIFT_TAG=swift-${SWIFT_VERSION}-RELEASE
 ARG SWIFT_WEBROOT=https://download.swift.org/development