diff --git a/RELEASING.md b/RELEASING.md
index 7794b385..5f5e6348 100644
--- a/RELEASING.md
+++ b/RELEASING.md
@@ -1,13 +1,29 @@
-# Releasing swiftly
+# Releasing
+
+Swiftly and the swiftly-install release script have different release schedules and their version numbers do not correspond. Below is instructions for releasing each.
+
+## Releasing swiftly
 
 1. Check out the commit you wish to create a release for. Ensure no other local modifications or changes are present.
 
-1. Ensure the version string in `Swiftly.swift` is accurate. If it is not, push another commit updating it to the proper value.
+2. Ensure the version string in `SwiftlyCore/SwiftlyCore.swift` is accurate. If it is not, push another commit updating it to the proper value.
+
+3. Create a tag on that commit with the format "x.y.z". Do not omit "z", even if its value is 0.
+
+4. Build the executables for the release by running ./scripts/build_release.sh from the root of the swiftly repository (do this once on an x86_64 machine and once on an aarch64 one)
+
+5. Push the tag to `origin`. `git push origin <tag_name>`
+
+6. Go to the GitHub page for the new tag, click edit tag, add an appropriate description, attach the prebuilt executables, and click "Publish Release".
+
+## Releasing swiftly-install
+
+1. Check out the commit you wish to create a release for. Ensure no other local modifications or changes are present.
 
-1. Create a tag on that commit with the format "x.y.z". Do not omit "z", even if its value is 0.
+2. Ensure the version string `SWIFTLY_INSTALL_VERSION` in `install/swiftly-install.sh` is accurate. If it is not, push another commit updating it to the proper value.
 
-1. Build the executables for the release by running ./scripts/build_release.sh from the root of the swiftly repository (do this once on an x86_64 machine and once on an aarch64 one)
+3. Create a tag on that commit with the format "swiftly-install-x.y.z". Do not omit "z", even if its value is 0.
 
-1. Push the tag to `origin`.
+4. Push the tag to `origin`. `git push origin <tag_name>`
 
-1. Go to the GitHub page for the new tag, click edit tag, add an appropriate description, attach the prebuilt executables, and click "Publish Release".
+5. Copy `install/swiftly-install.sh` to website branch of repository
diff --git a/Sources/SwiftlyCore/SwiftlyCore.swift b/Sources/SwiftlyCore/SwiftlyCore.swift
index be0925db..a038c1f4 100644
--- a/Sources/SwiftlyCore/SwiftlyCore.swift
+++ b/Sources/SwiftlyCore/SwiftlyCore.swift
@@ -1,6 +1,6 @@
 import Foundation
 
-public let version = SwiftlyVersion(major: 0, minor: 2, patch: 0)
+public let version = SwiftlyVersion(major: 0, minor: 3, patch: 0)
 
 /// A separate home directory to use for testing purposes. This overrides swiftly's default
 /// home directory location logic.
diff --git a/docker/docker-compose.1804.yaml b/docker/docker-compose.1804.yaml
index 8d034595..da34363d 100644
--- a/docker/docker-compose.1804.yaml
+++ b/docker/docker-compose.1804.yaml
@@ -6,7 +6,7 @@ services:
     image: swiftly:18.04-test
     build:
       args:
-        base_image: "swift:5.8-bionic"
+        base_image: "swift:5.10-bionic"
 
   test:
     image: swiftly:18.04-test
diff --git a/docker/docker-compose.2004.yaml b/docker/docker-compose.2004.yaml
index 988c4b19..a4799ace 100644
--- a/docker/docker-compose.2004.yaml
+++ b/docker/docker-compose.2004.yaml
@@ -6,7 +6,7 @@ services:
     image: swiftly:20.04-test
     build:
       args:
-        base_image: "swift:5.8-focal"
+        base_image: "swift:5.10-focal"
 
   test:
     image: swiftly:20.04-test
diff --git a/docker/docker-compose.2204.yaml b/docker/docker-compose.2204.yaml
index 98d055b3..824721cd 100644
--- a/docker/docker-compose.2204.yaml
+++ b/docker/docker-compose.2204.yaml
@@ -6,7 +6,7 @@ services:
     image: swiftly:22.04-test
     build:
       args:
-        base_image: "swift:5.8-jammy"
+        base_image: "swift:5.10-jammy"
 
   test:
     image: swiftly:22.04-test
diff --git a/docker/docker-compose.amazonlinux2.yaml b/docker/docker-compose.amazonlinux2.yaml
index a7873bf7..4874d2af 100644
--- a/docker/docker-compose.amazonlinux2.yaml
+++ b/docker/docker-compose.amazonlinux2.yaml
@@ -8,7 +8,7 @@ services:
       context: ..
       dockerfile: docker/test-amazonlinux2.dockerfile
       args:
-        base_image: "swift:5.8-amazonlinux2"
+        base_image: "swift:5.10-amazonlinux2"
 
   test:
     image: swiftly:amazonlinux2-test
diff --git a/docker/docker-compose.ubi9.yaml b/docker/docker-compose.ubi9.yaml
index a213936a..36c85c5d 100644
--- a/docker/docker-compose.ubi9.yaml
+++ b/docker/docker-compose.ubi9.yaml
@@ -8,7 +8,7 @@ services:
       context: ..
       dockerfile: docker/test-ubi9.dockerfile
       args:
-        base_image: "swift:5.8-rhel-ubi9"
+        base_image: "swift:5.10-rhel-ubi9"
 
   test:
     image: swiftly:ubi9-test
diff --git a/docker/test-amazonlinux2.dockerfile b/docker/test-amazonlinux2.dockerfile
index 84fbe6b1..0fc0ca9d 100644
--- a/docker/test-amazonlinux2.dockerfile
+++ b/docker/test-amazonlinux2.dockerfile
@@ -1,4 +1,4 @@
-ARG base_image=swift:5.8-amazonlinux2
+ARG base_image=swift:5.10-amazonlinux2
 FROM $base_image
 # needed to do again after FROM due to docker limitation
 ARG swift_version
diff --git a/docker/test-ubi9.dockerfile b/docker/test-ubi9.dockerfile
index 7f152350..46bed02f 100644
--- a/docker/test-ubi9.dockerfile
+++ b/docker/test-ubi9.dockerfile
@@ -1,4 +1,4 @@
-ARG base_image=swift:5.8-rhel-ubi9
+ARG base_image=swift:5.10-rhel-ubi9
 FROM $base_image
 # needed to do again after FROM due to docker limitation
 ARG swift_version
diff --git a/docker/test.dockerfile b/docker/test.dockerfile
index eb00778e..c28571bd 100644
--- a/docker/test.dockerfile
+++ b/docker/test.dockerfile
@@ -1,4 +1,4 @@
-ARG swift_version=5.8
+ARG swift_version=5.10
 ARG ubuntu_version=jammy
 ARG base_image=swift:$swift_version-$ubuntu_version
 FROM $base_image
diff --git a/install/swiftly-install.sh b/install/swiftly-install.sh
index 4dff0466..4faf694e 100755
--- a/install/swiftly-install.sh
+++ b/install/swiftly-install.sh
@@ -320,7 +320,7 @@ verify_getopt_install () {
     return "$?"
 }
 
-SWIFTLY_INSTALL_VERSION="0.3.0"
+SWIFTLY_INSTALL_VERSION="0.4.0"
 
 MODIFY_PROFILE="true"
 SWIFTLY_INSTALL_SYSTEM_DEPS="true"
diff --git a/scripts/build.dockerfile b/scripts/build.dockerfile
index d347b69e..58bb7e6e 100644
--- a/scripts/build.dockerfile
+++ b/scripts/build.dockerfile
@@ -1,7 +1,7 @@
 # Dockerfile used to build a statically-linked swiftly executable for generic GNU/Linux platforms.
 # See RELEASING.md for information on how to use this file.
 
-FROM swift:5.8.1-amazonlinux2
+FROM swift:5.10-amazonlinux2
 
 # swiftly build depdenencies
 RUN yum install -y \
diff --git a/scripts/build_release.sh b/scripts/build_release.sh
index 5cd44458..fa6e283e 100755
--- a/scripts/build_release.sh
+++ b/scripts/build_release.sh
@@ -5,11 +5,11 @@ set -o errexit
 version="$1"
 
 if [[ -z "$version" ]]; then
-    echo "Usage: build.sh <version tag>"
+    echo "Usage: build_release.sh <version tag>"
     exit 1
 fi
 
-raw_arch="$(uname --machine)"
+raw_arch="$(uname -m)"
 case "$raw_arch" in
     "x86_64")
         arch="x86_64"
@@ -20,7 +20,7 @@ case "$raw_arch" in
         ;;
 
     *)
-        echo "Error: Unsupported CPU architecture: $RAW_ARCH"
+        echo "Error: Unsupported CPU architecture: $raw_arch"
         ;;
 esac