diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 4d93bc155..970b8b0d7 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1 +1 @@
-{".":"0.6.5","cli":"0.6.5","compiler":"0.6.5","stdlib":"0.6.5"}
\ No newline at end of file
+{".":"0.6.6","cli":"0.6.6","compiler":"0.6.6","stdlib":"0.6.6"}
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index bd7eeccdc..a258c9535 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.6.6](https://github.com/grain-lang/grain/compare/grain-v0.6.5...grain-v0.6.6) (2024-08-12)
+
+
+### Bug Fixes
+
+* **lsp:** Prevent crash on types not included from other modules ([#2137](https://github.com/grain-lang/grain/issues/2137)) ([865da8a](https://github.com/grain-lang/grain/commit/865da8a53e04f4e6a3367cad60b06edb024de0b9))
+
 ## [0.6.5](https://github.com/grain-lang/grain/compare/grain-v0.6.4...grain-v0.6.5) (2024-07-31)
 
 
diff --git a/cli/CHANGELOG.md b/cli/CHANGELOG.md
index 254015b43..916828376 100644
--- a/cli/CHANGELOG.md
+++ b/cli/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.6.6](https://github.com/grain-lang/grain/compare/cli-v0.6.5...cli-v0.6.6) (2024-08-12)
+
+
+### Miscellaneous Chores
+
+* **cli:** Synchronize Grain versions
+
 ## [0.6.5](https://github.com/grain-lang/grain/compare/cli-v0.6.4...cli-v0.6.5) (2024-07-31)
 
 
diff --git a/cli/package.json b/cli/package.json
index c920922b4..17262f6b3 100644
--- a/cli/package.json
+++ b/cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@grain/cli",
-  "version": "0.6.5",
+  "version": "0.6.6",
   "description": "A command line tool for the Grain language.",
   "main": "index.js",
   "engines": {
@@ -34,7 +34,7 @@
   },
   "homepage": "https://github.com/grain-lang/grain#readme",
   "dependencies": {
-    "@grain/stdlib": "0.6.5",
+    "@grain/stdlib": "0.6.6",
     "commander": "^8.1.0"
   },
   "devDependencies": {
diff --git a/compiler/CHANGELOG.md b/compiler/CHANGELOG.md
index 0ff886196..d4dcbfee9 100644
--- a/compiler/CHANGELOG.md
+++ b/compiler/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.6.6](https://github.com/grain-lang/grain/compare/compiler-v0.6.5...compiler-v0.6.6) (2024-08-12)
+
+
+### Bug Fixes
+
+* **lsp:** Prevent crash on types not included from other modules ([#2137](https://github.com/grain-lang/grain/issues/2137)) ([865da8a](https://github.com/grain-lang/grain/commit/865da8a53e04f4e6a3367cad60b06edb024de0b9))
+
 ## [0.6.5](https://github.com/grain-lang/grain/compare/compiler-v0.6.4...compiler-v0.6.5) (2024-07-31)
 
 
diff --git a/compiler/dune-project b/compiler/dune-project
index 92b5b54e9..76398f697 100644
--- a/compiler/dune-project
+++ b/compiler/dune-project
@@ -1,6 +1,6 @@
 (lang dune 2.3)
 (name grain)
-(version 0.6.5)
+(version 0.6.6)
 (using menhir 2.0)
 
 ; Flip this to `true` when we want to generate opam files again
diff --git a/compiler/esy.json b/compiler/esy.json
index 2d585d613..335d94e46 100644
--- a/compiler/esy.json
+++ b/compiler/esy.json
@@ -1,6 +1,6 @@
 {
   "name": "@grain/compiler",
-  "version": "0.6.5",
+  "version": "0.6.6",
   "esy": {
     "build": [
       "dune build @native --no-buffer"
diff --git a/compiler/package.json b/compiler/package.json
index 5dc069215..88250a4fa 100644
--- a/compiler/package.json
+++ b/compiler/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@grain/compiler",
   "private": true,
-  "version": "0.6.5",
+  "version": "0.6.6",
   "bin": {
     "grainc": "_esy/default/build/install/default/bin/grainc"
   },
diff --git a/package-lock.json b/package-lock.json
index dee509c94..2ded26a36 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "grain",
-  "version": "0.6.5",
+  "version": "0.6.6",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "grain",
-      "version": "0.6.5",
+      "version": "0.6.6",
       "workspaces": [
         "cli",
         "stdlib",
diff --git a/package.json b/package.json
index 53cff6431..ed3f6c5b7 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "grain",
   "private": true,
-  "version": "0.6.5",
+  "version": "0.6.6",
   "description": "The Grain monorepo.",
   "workspaces": [
     "cli",
diff --git a/stdlib/CHANGELOG.md b/stdlib/CHANGELOG.md
index 99cef55ee..cde04e5a8 100644
--- a/stdlib/CHANGELOG.md
+++ b/stdlib/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.6.6](https://github.com/grain-lang/grain/compare/stdlib-v0.6.5...stdlib-v0.6.6) (2024-08-12)
+
+
+### Miscellaneous Chores
+
+* **stdlib:** Synchronize Grain versions
+
 ## [0.6.5](https://github.com/grain-lang/grain/compare/stdlib-v0.6.4...stdlib-v0.6.5) (2024-07-31)
 
 
diff --git a/stdlib/package.json b/stdlib/package.json
index 14ed8b1d2..b2757c3ee 100644
--- a/stdlib/package.json
+++ b/stdlib/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@grain/stdlib",
-  "version": "0.6.5",
+  "version": "0.6.6",
   "description": "The standard library for the Grain language.",
   "license": "MIT",
   "homepage": "https://grain-lang.org",