diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 974163d05..8e6976d9d 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,4 +1,4 @@
 {
-  "guppylang": "1.0.0-a5",
+  "guppylang": "1.0.0-a6",
   "guppylang-internals": "1.0.0-a5"
 }
diff --git a/guppylang/CHANGELOG.md b/guppylang/CHANGELOG.md
index ac9fc8dd4..eb202a41c 100644
--- a/guppylang/CHANGELOG.md
+++ b/guppylang/CHANGELOG.md
@@ -14,6 +14,26 @@ This changelog documents user-facing changes to the Guppy language excluding cha
 
 As of August 2025, The Guppy language is undergoing rapid development and is currently unstable. There is a Guppy v1.0 stability [milestone](https://github.com/quantinuum/guppylang/milestone/12) that is a work in progress and subject to change.
 
+## [1.0.0-a6](https://github.com/Quantinuum/guppylang/compare/guppylang-v1.0.0-a5...guppylang-v1.0.0-a6) (2026-06-19)
+
+
+### ⚠ BREAKING CHANGES
+
+* Remove deprecated reexports and leave custom import errors ([#1886](https://github.com/Quantinuum/guppylang/issues/1886))
+* Remove deprecated decorators, functions, and sync dummy interface ([#1855](https://github.com/Quantinuum/guppylang/issues/1855))
+* rename result and state_result to output and state_output ([#1871](https://github.com/Quantinuum/guppylang/issues/1871))
+
+### Features
+
+* **std:** add bounded random int to PCG32 ([#1877](https://github.com/Quantinuum/guppylang/issues/1877)) ([01004a8](https://github.com/Quantinuum/guppylang/commit/01004a84714564549595954b045b927bb4bfb7b9))
+
+
+### Code Refactoring
+
+* Remove deprecated decorators, functions, and sync dummy interface ([#1855](https://github.com/Quantinuum/guppylang/issues/1855)) ([68b217c](https://github.com/Quantinuum/guppylang/commit/68b217c92350b3e3ebe40779b7d97e0955f945f9))
+* Remove deprecated reexports and leave custom import errors ([#1886](https://github.com/Quantinuum/guppylang/issues/1886)) ([3c19192](https://github.com/Quantinuum/guppylang/commit/3c1919266b82e039017394f23bccf9381fda5a6b))
+* rename result and state_result to output and state_output ([#1871](https://github.com/Quantinuum/guppylang/issues/1871)) ([a6a6ff6](https://github.com/Quantinuum/guppylang/commit/a6a6ff6ce3220fec258b22cb412cb8314d661302))
+
 ## [1.0.0-a5](https://github.com/Quantinuum/guppylang/compare/guppylang-v1.0.0-a4...guppylang-v1.0.0-a5) (2026-06-15)
 
 
diff --git a/guppylang/pyproject.toml b/guppylang/pyproject.toml
index 413c33287..65c284598 100644
--- a/guppylang/pyproject.toml
+++ b/guppylang/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "guppylang"
-version = "1.0.0-a5"
+version = "1.0.0-a6"
 requires-python = ">=3.10,<4"
 description = "Pythonic quantum-classical programming language"
 license = { file = "LICENCE" }
diff --git a/guppylang/src/guppylang/__init__.py b/guppylang/src/guppylang/__init__.py
index 6cdab22e4..ba851c18a 100644
--- a/guppylang/src/guppylang/__init__.py
+++ b/guppylang/src/guppylang/__init__.py
@@ -21,4 +21,4 @@
 
 # This is updated by our release-please workflow, triggered by this
 # annotation: x-release-please-version
-__version__ = "1.0.0-a5"
+__version__ = "1.0.0-a6"