diff --git a/pyproject.toml b/pyproject.toml
index b70fcd2..d9ce4fb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ keywords = ["worldtree", "debug", "sse", "web", "observability"]
 # owned by worldtree-sdk post-cutover (#20 slice-7 dropped httpx-sse).
 dependencies = [
     "httpx>=0.27",
-    "worldtree-sdk==1.0.0", # #20 cutover: the consumer client layer (gitea PyPI); the hand-rolled wrappers now live behind ratatoskr.wt
+    "worldtree-sdk==1.1.1", # #20 cutover: the consumer client layer (gitea PyPI); the hand-rolled wrappers now live behind ratatoskr.wt. 1.1.1 = path-encoding correctness fix (quote safe="" — a caller-shaped `/`/`../` in a path param no longer traverses the URL; we pass caller-shaped session_id/agent_id) + additive define_or_reuse / set_persona_state_raw (our parity #6) + 64 KiB error-body alloc cap. Same frozen wire as 1.0.0 (drop-in).
 ]
 
 [project.optional-dependencies]
diff --git a/uv.lock b/uv.lock
index 819efa5..3ad7caf 100644
--- a/uv.lock
+++ b/uv.lock
@@ -509,7 +509,7 @@ requires-dist = [
     { name = "sqlite-vec", marker = "extra == 'provider'", specifier = ">=0.1.6" },
     { name = "starlette", marker = "extra == 'web'", specifier = ">=0.40" },
     { name = "uvicorn", extras = ["standard"], marker = "extra == 'web'", specifier = ">=0.30" },
-    { name = "worldtree-sdk", specifier = "==1.0.0", index = "https://gitea.phasefinal.com/api/packages/vh/pypi/simple/" },
+    { name = "worldtree-sdk", specifier = "==1.1.1", index = "https://gitea.phasefinal.com/api/packages/vh/pypi/simple/" },
 ]
 provides-extras = ["web", "provider", "dev"]
 
@@ -897,12 +897,12 @@ wheels = [
 
 [[package]]
 name = "worldtree-sdk"
-version = "1.0.0"
+version = "1.1.1"
 source = { registry = "https://gitea.phasefinal.com/api/packages/vh/pypi/simple/" }
 dependencies = [
     { name = "httpx" },
 ]
-sdist = { url = "https://gitea.phasefinal.com/api/packages/vh/pypi/files/worldtree-sdk/1.0.0/worldtree_sdk-1.0.0.tar.gz", hash = "sha256:0b87001fd90b304befe5e76d21a41dd093057a9d59f86a25189fab80defcd043" }
+sdist = { url = "https://gitea.phasefinal.com/api/packages/vh/pypi/files/worldtree-sdk/1.1.1/worldtree_sdk-1.1.1.tar.gz", hash = "sha256:75a1f8ca405b22f0c20fdba0342b103a10ec280ee86671cae2407bd4279eb5b6" }
 wheels = [
-    { url = "https://gitea.phasefinal.com/api/packages/vh/pypi/files/worldtree-sdk/1.0.0/worldtree_sdk-1.0.0-py3-none-any.whl", hash = "sha256:ec9cb03ecdb4662bf1280a64316ee4545bb1330db42e3135f34f56e62c07f6c5" },
+    { url = "https://gitea.phasefinal.com/api/packages/vh/pypi/files/worldtree-sdk/1.1.1/worldtree_sdk-1.1.1-py3-none-any.whl", hash = "sha256:ce8fd18b2778bcd5babf63b145b5903f02e51803d4cfc0571cc6baa28c59058a" },
 ]