diff --git a/CHANGELOG.md b/CHANGELOG.md
index 09171db0..25a4f37d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,11 @@ Bugfixes:
 
 Other improvements:
 
+## [v2022-07-12.1](https://github.com/purescript/trypurescript/releases/tag/v2022-07-12.1)
+
+Other improvements:
+- Update to PureScript 0.15.4 (#281 by @JordanMartinez)
+
 ## [v2022-06-24.1](https://github.com/purescript/trypurescript/releases/tag/v2022-06-24.1)
 
 Other improvements:
diff --git a/client/src/Try/SharedConfig.purs b/client/src/Try/SharedConfig.purs
index 74ef436b..c6ea0d74 100644
--- a/client/src/Try/SharedConfig.purs
+++ b/client/src/Try/SharedConfig.purs
@@ -6,13 +6,13 @@ module Try.SharedConfig where
 import Prelude
 
 pursVersion :: String
-pursVersion = "v0.15.3"
+pursVersion = "v0.15.4"
 
 pursReleaseUrl :: String
 pursReleaseUrl = "https://github.com/purescript/purescript/releases/tag/" <> pursVersion
 
 packageSetVersion :: String
-packageSetVersion = "0.15.2-20220621"
+packageSetVersion = "0.15.2-20220624"
 
 packageSetPackageJsonUrl :: String
 packageSetPackageJsonUrl = "https://github.com/purescript/package-sets/blob/psc-" <> packageSetVersion <> "/packages.json"
diff --git a/prep-release.sh b/prep-release.sh
new file mode 100755
index 00000000..e0934247
--- /dev/null
+++ b/prep-release.sh
@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+pushd staging || exit 1
+
+spago upgrade-set
+
+cat > spago.dhall << EOF
+{ name = "try-purescript-server"
+, dependencies = [] : List Text
+, packages = ./packages.dhall
+, sources = [ "src/**/*.purs" ]
+}
+
+EOF
+spago ls packages | cut -f 1 -d ' ' | tr '\n' ' ' | xargs spago install
+
+popd || exit 1
+
+pushd client || exit 1
+
+npm run updateConfigVersions
+
+popd || exit 1
diff --git a/stack.yaml b/stack.yaml
index 5ac88318..1cc6fef0 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -3,7 +3,7 @@ packages:
   - "."
 
 extra-deps:
-  - purescript-0.15.3
+  - purescript-0.15.4
   - language-javascript-0.7.0.0
   - process-1.6.13.1
   # The Cabal library is not in Stackage
diff --git a/staging/packages.dhall b/staging/packages.dhall
index 620501fe..42fabb88 100644
--- a/staging/packages.dhall
+++ b/staging/packages.dhall
@@ -1,5 +1,5 @@
 let upstream =
-      https://github.com/purescript/package-sets/releases/download/psc-0.15.2-20220621/packages.dhall
-        sha256:78caab14e4d8ff3886a057f0380c2d4a2500e2ee7ab5c1d32a0f9ce5c71eedd8
+      https://github.com/purescript/package-sets/releases/download/psc-0.15.2-20220624/packages.dhall
+        sha256:08989ed9f53e381f879f1b7012ad7684b1ed64d7164c4ad75e306d3210a46c92
 
 in  upstream
diff --git a/staging/spago.dhall b/staging/spago.dhall
index 34bd8022..0821296f 100644
--- a/staging/spago.dhall
+++ b/staging/spago.dhall
@@ -54,6 +54,7 @@
   , "debug"
   , "decimals"
   , "deku"
+  , "deno"
   , "dissect"
   , "distributive"
   , "dodo-printer"
@@ -94,6 +95,7 @@
   , "fuzzy"
   , "gen"
   , "generate-values"
+  , "generic-router"
   , "geometry-plane"
   , "github-actions-toolkit"
   , "graphs"