diff --git a/CHANGELOG.md b/CHANGELOG.md
index 67aa411..ec15dbd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,11 @@
 Please see https://github.com/purescript/pursuit/blob/master/CHANGELOG.md for
 the most up-to-date version of this file.
 
+## Unreleased
+
+- Update `purescript` to `0.14.5` and `purescript-cst` to `0.4.0.0` (@JordanMartinez)
+- 
+
 ## v0.8.5
 
 - Fix build command used in CI (@thomashoneyman)
diff --git a/stack.yaml b/stack.yaml
index 795e86e..fa0310f 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -11,8 +11,8 @@ extra-deps:
   - bytestring-trie-0.2.5.0
   - classy-prelude-yesod-1.5.0
   - language-javascript-0.7.0.0
-  - purescript-0.14.3
-  - purescript-cst-0.3.0.0
+  - purescript-0.14.5
+  - purescript-cst-0.4.0.0
 
 flags:
   pursuit: