diff --git a/agents/hermes/Dockerfile.base b/agents/hermes/Dockerfile.base
index 614e1529b80..01631eb41bf 100644
--- a/agents/hermes/Dockerfile.base
+++ b/agents/hermes/Dockerfile.base
@@ -22,8 +22,8 @@ FROM node:22-slim@sha256:4f77a690f2f8946ab16fe1e791a3ac0667ae1c3575c3e4d0d4589e9
 ENV DEBIAN_FRONTEND=noninteractive
 
 # Hermes version pinned for reproducibility.
-# Calver tag v2026.4.13 = semver 0.9.0.
-ARG HERMES_VERSION=v2026.4.13
+# Calver tag v2026.4.23 = semver 0.11.0.
+ARG HERMES_VERSION=v2026.4.23
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
         python3=3.11.2-1+b1 \
diff --git a/agents/hermes/manifest.yaml b/agents/hermes/manifest.yaml
index afe4a848842..1b39452e4b2 100644
--- a/agents/hermes/manifest.yaml
+++ b/agents/hermes/manifest.yaml
@@ -16,7 +16,7 @@ homepage: "https://github.com/NousResearch/hermes-agent"
 install_method: curl  # curl install.sh | bash
 binary_path: /usr/local/bin/hermes
 version_command: "hermes --version"
-expected_version: "2026.4.8"
+expected_version: "2026.4.23"
 gateway_command: "hermes gateway run"
 
 # ── Health probe ────────────────────────────────────────────────