diff --git a/CHANGELOG.md b/CHANGELOG.md
index cb55baf..49dff26 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,10 +2,38 @@
 
 All notable changes to the opencode-devbox container image.
 
-Tags follow `v{opencode_version}[letter]` — bare tag for the first build on a new opencode release, letter suffix (`b`, `c`, …) for container-level rebuilds on the same version. See [AGENTS.md](AGENTS.md#versioning-scheme) for details.
+Tags follow **independent semver** (since `v2.0.0`) — they version *this image*, not the bundled opencode release. MAJOR = breaking run/config changes, MINOR = backward-compatible features, PATCH = opencode/tool version bumps and small fixes. Pre-`v2.0.0` tags used the older `v{opencode_version}[letter]` scheme. See [AGENTS.md](AGENTS.md#versioning-scheme) for details.
 
 ---
 
+## v2.1.2 — 2026-06-16
+
+Image-semver **patch**: bumps opencode to `1.17.7`. No devbox-side changes
+beyond the `OPENCODE_VERSION` ARG, so only the variant layer is rebuilt; the
+base is unaffected by this change.
+
+### Bumped: opencode-ai 1.17.6 → 1.17.7
+
+`OPENCODE_VERSION` ARG in `Dockerfile.variant`. Upstream `1.17.7` (published
+2026-06-14) is a bugfix-and-minor-improvement patch with no breaking,
+runtime-dependency, bundled-Bun, or CPU/AVX changes — a pure version bump on
+the devbox side. Upstream highlights:
+
+- **Core (bugfixes):** plugin client requests now reuse the active server
+  instead of assuming the default local port; ACP shell tool calls show the
+  command and working directory from the start; plugin-provided shell
+  environment variables now apply to PTY sessions.
+- **Core (improvements):** MCP servers can now receive the current workspace as
+  a client root.
+- **TUI:** MCP debug now uses the SDK's latest protocol version.
+- **Desktop:** the new-session route stays scoped to its own draft server, so
+  prompts and state target the right workspace.
+- **SDK:** clients refresh model and provider availability when integrations
+  change; credential update and remove calls accept `location`.
+
+Full notes:
+<https://github.com/anomalyco/opencode/releases/tag/v1.17.7>.
+
 ## v2.1.1 — 2026-06-14
 
 Image-semver **patch**: bumps opencode and lands the `mempalace-toolkit`
diff --git a/Dockerfile.variant b/Dockerfile.variant
index 3683f85..9f0bafb 100644
--- a/Dockerfile.variant
+++ b/Dockerfile.variant
@@ -39,7 +39,7 @@ ARG USER_NAME=developer
 # edit, so the cache-hit class of bug that bit pi-devbox v0.74.0..
 # v0.75.5 cannot apply here.
 ARG INSTALL_OPENCODE=true
-ARG OPENCODE_VERSION=1.17.6
+ARG OPENCODE_VERSION=1.17.7
 RUN if [ "${INSTALL_OPENCODE}" = "true" ]; then \
       NPM_CONFIG_PREFIX=/usr npm install -g opencode-ai@${OPENCODE_VERSION} && \
       opencode --version ; \