diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5525674..9758e5a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,8 @@ follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
   the postgres `ensure_table` port-signature reference (0.6.0 → 0.8.0) and the
   `ensure_unique_key` message-order claim (pyarrow grouping order is not
   contractual).
+- The trino adapter (0.3.1) and duckdb adapter (0.2.1) release with their
+  `continuo-engine-contract` pin moved to 0.8.1; no behavior change.
 
 ## [0.9.0] - 2026-10-11
 
diff --git a/adapters/duckdb/pyproject.toml b/adapters/duckdb/pyproject.toml
index 6c5cfda..cb339e5 100644
--- a/adapters/duckdb/pyproject.toml
+++ b/adapters/duckdb/pyproject.toml
@@ -1,5 +1,5 @@
 [project]
-version = "0.2.0"
+version = "0.2.1"
 name = "continuo-duckdb-adapter"
 description = "DuckDB (DuckLake) warehouse adapter for Continuo: validation and python-node runtime."
 authors = [{ name = "Simone Carolini" }]
diff --git a/adapters/trino/pyproject.toml b/adapters/trino/pyproject.toml
index 7cd1e36..124d42c 100644
--- a/adapters/trino/pyproject.toml
+++ b/adapters/trino/pyproject.toml
@@ -1,5 +1,5 @@
 [project]
-version = "0.3.0"
+version = "0.3.1"
 name = "continuo-trino-adapter"
 description = "Trino warehouse adapter for Continuo: validation and python-node runtime."
 authors = [{ name = "Simone Carolini" }]
diff --git a/image-requirements-duckdb.txt b/image-requirements-duckdb.txt
index 9767f41..d26b7d6 100644
--- a/image-requirements-duckdb.txt
+++ b/image-requirements-duckdb.txt
@@ -1,3 +1,3 @@
 continuo-python-runtime==0.10.0
-continuo-duckdb-adapter==0.2.0
+continuo-duckdb-adapter==0.2.1
 continuo-engine-contract==0.8.1
diff --git a/image-requirements-trino.txt b/image-requirements-trino.txt
index d022f1c..f1d0563 100644
--- a/image-requirements-trino.txt
+++ b/image-requirements-trino.txt
@@ -1,3 +1,3 @@
 continuo-python-runtime==0.10.0
-continuo-trino-adapter==0.3.0
+continuo-trino-adapter==0.3.1
 continuo-engine-contract==0.8.1
diff --git a/uv.lock b/uv.lock
index c3f070b..84a475f 100644
--- a/uv.lock
+++ b/uv.lock
@@ -162,7 +162,7 @@ wheels = [
 
 [[package]]
 name = "continuo-duckdb-adapter"
-version = "0.2.0"
+version = "0.2.1"
 source = { editable = "adapters/duckdb" }
 dependencies = [
     { name = "continuo-engine-contract" },
@@ -305,7 +305,7 @@ test = [
 
 [[package]]
 name = "continuo-trino-adapter"
-version = "0.3.0"
+version = "0.3.1"
 source = { editable = "adapters/trino" }
 dependencies = [
     { name = "continuo-engine-contract" },