diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ac01892..0801be0d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,8 @@
 # Changelog
 ## [Unreleased]
 
+## [0.26.4] - 2026-01-15
+
 ### Added
 
 - **AGUI_STATE_KEY Constant**: Exported `AGUI_STATE_KEY` (`"haiku.rag.chat"`) from `haiku.rag.agents.chat` for namespaced AG-UI state emission
diff --git a/app/backend/pyproject.toml b/app/backend/pyproject.toml
index 7dcd1e12..3ef1e7e2 100644
--- a/app/backend/pyproject.toml
+++ b/app/backend/pyproject.toml
@@ -8,7 +8,7 @@ dependencies = [
     "uvicorn[standard]>=0.40.0",
     "pydantic-ai-slim[ag-ui,anthropic,openai]>=1.39.0",
     "python-dotenv>=1.2.1",
-    "haiku.rag-slim[agui]>=0.26.3",
+    "haiku.rag-slim[agui]>=0.26.4",
     "logfire[pydantic-ai]>=3.17.0",
 ]
 
diff --git a/evaluations/pyproject.toml b/evaluations/pyproject.toml
index c1d96716..4efe72a9 100644
--- a/evaluations/pyproject.toml
+++ b/evaluations/pyproject.toml
@@ -2,7 +2,7 @@
 
 name = "haiku.rag-evals"
 description = "Benchmarking and evaluation scripts for haiku.rag"
-version = "0.26.3"
+version = "0.26.4"
 authors = [{ name = "Yiorgis Gozadinos", email = "ggozadinos@gmail.com" }]
 license = { text = "MIT" }
 requires-python = ">=3.12"
diff --git a/examples/a2a-server/pyproject.toml b/examples/a2a-server/pyproject.toml
index 97d12db0..22dcc0f7 100644
--- a/examples/a2a-server/pyproject.toml
+++ b/examples/a2a-server/pyproject.toml
@@ -9,7 +9,7 @@ requires-python = ">=3.12"
 keywords = ["RAG", "a2a", "agent", "conversational-ai"]
 
 dependencies = [
-    "haiku.rag>=0.26.3",
+    "haiku.rag>=0.26.4",
     "fasta2a>=0.6.0",
     "pydantic-ai-slim[a2a]>=1.39.0",
     "rich>=14.2.0",
diff --git a/haiku_rag_slim/pyproject.toml b/haiku_rag_slim/pyproject.toml
index 3df6c066..50dac8d9 100644
--- a/haiku_rag_slim/pyproject.toml
+++ b/haiku_rag_slim/pyproject.toml
@@ -2,7 +2,7 @@
 
 name = "haiku.rag-slim"
 description = "Opinionated agentic RAG powered by LanceDB, Pydantic AI, and Docling - Minimal dependencies"
-version = "0.26.3"
+version = "0.26.4"
 authors = [{ name = "Yiorgis Gozadinos", email = "ggozadinos@gmail.com" }]
 license = { text = "MIT" }
 readme = { file = "README.md", content-type = "text/markdown" }
diff --git a/pyproject.toml b/pyproject.toml
index a0162d9e..39698dea 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,7 @@
 
 name = "haiku.rag"
 description = "Opinionated agentic RAG powered by LanceDB, Pydantic AI, and Docling"
-version = "0.26.3"
+version = "0.26.4"
 authors = [{ name = "Yiorgis Gozadinos", email = "ggozadinos@gmail.com" }]
 license = { text = "MIT" }
 readme = { file = "README.md", content-type = "text/markdown" }
@@ -30,7 +30,7 @@ classifiers = [
 ]
 
 dependencies = [
-    "haiku.rag-slim[docling,voyageai,mxbai,cohere,zeroentropy,tui]==0.26.3",
+    "haiku.rag-slim[docling,voyageai,mxbai,cohere,zeroentropy,tui]==0.26.4",
 ]
 
 [project.scripts]
diff --git a/uv.lock b/uv.lock
index 15a631f4..810d3a82 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1285,7 +1285,7 @@ wheels = [
 
 [[package]]
 name = "haiku-rag"
-version = "0.26.3"
+version = "0.26.4"
 source = { editable = "." }
 dependencies = [
     { name = "haiku-rag-slim", extra = ["cohere", "docling", "mxbai", "tui", "voyageai", "zeroentropy"] },
@@ -1340,7 +1340,7 @@ dev = [
 
 [[package]]
 name = "haiku-rag-evals"
-version = "0.26.3"
+version = "0.26.4"
 source = { editable = "evaluations" }
 dependencies = [
     { name = "datasets" },
@@ -1361,7 +1361,7 @@ requires-dist = [
 
 [[package]]
 name = "haiku-rag-slim"
-version = "0.26.3"
+version = "0.26.4"
 source = { editable = "haiku_rag_slim" }
 dependencies = [
     { name = "docling-core" },