diff --git a/.github/workflows/image-security.yml b/.github/workflows/image-security.yml
index 5395800..a9a3062 100644
--- a/.github/workflows/image-security.yml
+++ b/.github/workflows/image-security.yml
@@ -2,6 +2,12 @@ name: Image security
 
 on:
   workflow_dispatch:
+  workflow_call:
+  pull_request:
+    paths:
+      - Dockerfile
+      - deploy/encoding-booster/encoder/**
+      - .github/workflows/image-security.yml
   schedule:
     - cron: "41 6 * * 1"
 
@@ -35,8 +41,9 @@ jobs:
           DOCKERFILE: ${{ matrix.dockerfile }}
           BUILD_CONTEXT: ${{ matrix.context }}
         run: docker build --pull --file "$DOCKERFILE" --tag "mave-scan:$IMAGE_NAME" "$BUILD_CONTEXT"
-      - uses: aquasecurity/trivy-action@d2a0b60797ff03db6132bd4e2b293f9b37081297
+      - uses: aquasecurity/trivy-action@ed142fd0673e97e23eac54620cfb913e5ce36c25 # v0.36.0
         with:
+          version: v0.75.0
           image-ref: mave-scan:${{ matrix.name }}
           scanners: vuln
           severity: HIGH,CRITICAL
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 1e177e2..57bfbbf 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -34,6 +34,9 @@ jobs:
     uses: ./.github/workflows/security.yml
     with:
       release_version: ${{ needs.version.outputs.version }}
+  image-security:
+    needs: version
+    uses: ./.github/workflows/image-security.yml
   self-hosted:
     needs: version
     runs-on: ubuntu-24.04
@@ -72,7 +75,7 @@ jobs:
                   print(f'::group::{name}\n{text}\n::endgroup::')
           PY
   release:
-    needs: [version, checks, self-hosted]
+    needs: [version, checks, image-security, self-hosted]
     runs-on: ubuntu-24.04
     permissions:
       contents: write
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index f79f50f..7a4abd5 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -37,7 +37,7 @@ jobs:
           trap 'sudo rm -rf "$artifacts"' EXIT
           docker run --rm \
             -v "$PWD/deploy/encoding-booster/encoder/sandbox/broker:/src:ro" \
-            -v "$artifacts:/out" -w /src golang:1.25.13-alpine3.23 \
+            -v "$artifacts:/out" -w /src golang:1.27.2-alpine3.23 \
             sh -c 'go test ./... && go vet ./... && CGO_ENABLED=0 go build -trimpath -o /out/mave-media-broker .'
           cc -O2 -Wall -Wextra -Werror deploy/encoding-booster/encoder/sandbox/media_sandbox.c \
             -lseccomp -o "$artifacts/mave-media-sandbox"
@@ -105,8 +105,8 @@ jobs:
         run: python3 .github/scripts/release.py apply
       - uses: erlef/setup-beam@54075bcc5e249e4758d363f27d099f55d843f124 # v1
         with:
-          otp-version: "28.2"
-          elixir-version: "1.19.4"
+          otp-version: "29.1.1"
+          elixir-version: "1.20.4"
       - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
         with:
           node-version: "24.21.0"
@@ -117,7 +117,7 @@ jobs:
             deps
             _build
             priv/ua_inspector
-          key: test-${{ runner.os }}-otp28.2-elixir1.19.4-${{ hashFiles('mix.lock') }}
+          key: test-${{ runner.os }}-otp29.1.1-elixir1.20.4-${{ hashFiles('mix.lock') }}
       - name: Prepare disposable media dependencies
         run: |
           sudo apt-get update
@@ -161,8 +161,8 @@ jobs:
         run: python3 .github/scripts/release.py apply
       - uses: erlef/setup-beam@54075bcc5e249e4758d363f27d099f55d843f124 # v1
         with:
-          otp-version: "28.2"
-          elixir-version: "1.19.4"
+          otp-version: "29.1.1"
+          elixir-version: "1.20.4"
       - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
         with:
           node-version: "24.21.0"
diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 0000000..cea54f2
--- /dev/null
+++ b/.tool-versions
@@ -0,0 +1,3 @@
+erlang 29.1.1
+elixir 1.20.4-otp-29
+nodejs 24.21.0
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f03db91..ba56338 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -46,7 +46,7 @@ development services publicly.
 
 Requirements:
 
-- Docker with Compose v2; Elixir 1.19.4 and Erlang/OTP 28.2, as pinned in the
+- Docker with Compose v2; Elixir 1.20.4 and Erlang/OTP 29.1.1, as pinned in the
   [Dockerfile](Dockerfile).
 - Node.js/npm, a C compiler, and Rust/Cargo.
 - FFmpeg and FFprobe on `PATH`, with H.264 encoding (`libx264`).
diff --git a/Dockerfile b/Dockerfile
index c21e2d4..c606c97 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,11 +9,11 @@
 #   - https://hub.docker.com/r/hexpm/elixir/tags - for the build image
 #   - https://hub.docker.com/_/ubuntu/tags?name=26.04 - for the release image
 #   - https://pkgs.org/ - resource for finding needed packages
-#   - Ex: docker.io/hexpm/elixir:1.19.4-erlang-28.2-debian-trixie-20251208-slim
+#   - Ex: docker.io/hexpm/elixir:1.20.4-erlang-29.1.1-debian-trixie-20261005-slim
 #
-ARG ELIXIR_VERSION=1.19.4
-ARG OTP_VERSION=28.2
-ARG DEBIAN_VERSION=trixie-20251208-slim
+ARG ELIXIR_VERSION=1.20.4
+ARG OTP_VERSION=29.1.1
+ARG DEBIAN_VERSION=trixie-20261005-slim
 ARG FFMPEG_VERSION=9.0.2
 ARG VERSION=dev
 ARG VCS_REF=unknown
@@ -26,7 +26,7 @@ ARG RUNNER_IMAGE="docker.io/ubuntu:26.04@sha256:da6fc2be547864451aa253836dd926da
 
 FROM node:24.21.0-bookworm-slim@sha256:0e0ff40c39bc087845bfb27465a0df4ea419520094bc35842ff83dd8cbe6f9b6 AS node_build
 
-FROM golang:1.25.13-alpine3.23 AS media_broker_build
+FROM golang:1.27.2-alpine3.23 AS media_broker_build
 WORKDIR /src
 COPY deploy/encoding-booster/encoder/sandbox/broker/ ./
 RUN go test ./... && CGO_ENABLED=0 go build -trimpath -o /mave-media-broker .
@@ -194,6 +194,10 @@ RUN apt-get update \
 # the compiled release and other runtime necessities
 FROM ${RUNNER_IMAGE} AS runtime_base
 
+# The base image includes Pebble, but this release runs under tini instead.
+# Remove the unused Go binary so it cannot retain an unpatched Go runtime.
+RUN rm -f /usr/bin/pebble
+
 ARG FFMPEG_VERSION
 RUN apt-get update \
   && apt-get upgrade -y --no-install-recommends \
@@ -204,6 +208,7 @@ RUN apt-get update \
     libmp3lame0 \
     libncurses6 \
     libseccomp2 \
+    libsctp1 \
     libnuma1 \
     libopus0 \
     libsharpyuv0 \
diff --git a/deploy/encoding-booster/encoder/Dockerfile b/deploy/encoding-booster/encoder/Dockerfile
index f750750..90ca25f 100644
--- a/deploy/encoding-booster/encoder/Dockerfile
+++ b/deploy/encoding-booster/encoder/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.25.13-alpine3.23 AS app-build
+FROM golang:1.27.2-alpine3.23 AS app-build
 WORKDIR /src
 COPY go.mod *.go ./
 COPY assets/play.png ./assets/play.png
diff --git a/deploy/encoding-booster/encoder/Dockerfile.gpu b/deploy/encoding-booster/encoder/Dockerfile.gpu
index f7cddbe..5339bf0 100644
--- a/deploy/encoding-booster/encoder/Dockerfile.gpu
+++ b/deploy/encoding-booster/encoder/Dockerfile.gpu
@@ -1,4 +1,4 @@
-FROM golang:1.25.13-alpine3.23 AS app-build
+FROM golang:1.27.2-alpine3.23 AS app-build
 
 WORKDIR /src
 COPY go.mod *.go ./
diff --git a/deploy/minio/Dockerfile b/deploy/minio/Dockerfile
index f69364e..337b970 100644
--- a/deploy/minio/Dockerfile
+++ b/deploy/minio/Dockerfile
@@ -1,10 +1,10 @@
 # The community images are no longer publicly pullable. Build the same pinned
 # releases from upstream source; Go's checksum database verifies module contents.
-FROM golang:1.25.13-alpine3.23 AS server-build
+FROM golang:1.27.2-alpine3.23 AS server-build
 ENV CGO_ENABLED=0 GOTOOLCHAIN=local
 RUN go install -trimpath github.com/minio/minio@v0.0.0-20250907161309-07c3a429bfed
 
-FROM golang:1.25.13-alpine3.23 AS client-build
+FROM golang:1.27.2-alpine3.23 AS client-build
 ENV CGO_ENABLED=0 GOTOOLCHAIN=local
 RUN go install -trimpath github.com/minio/mc@v0.0.0-20250813083541-7394ce0dd2a8
 
diff --git a/docs/security_checks.md b/docs/security_checks.md
index 902d5a0..23d0682 100644
--- a/docs/security_checks.md
+++ b/docs/security_checks.md
@@ -1,7 +1,7 @@
 # Security checks
 
 Pull requests run the complete test suite against disposable PostgreSQL,
-ClickHouse and MinIO services, with Elixir 1.19.4 / OTP 28.2 and FFmpeg.
+ClickHouse and MinIO services, with Elixir 1.20.4 / OTP 29.1.1 and FFmpeg.
 CI and the shared Core/SaaS asset builder use Node 24.21.0 LTS; the official
 checkout/setup-node/cache Actions use Node 24 as well. Production Core, CPU and
 GPU images use FFmpeg 9.0.2. The GPU build retains Ubuntu 24.04's NVIDIA headers
@@ -10,7 +10,9 @@ Compilation warnings, formatting, Credo, dependency advisories, high-severity
 npm advisories and newly committed secrets fail their respective jobs. Scanner
 output redacts secret values. Scheduled jobs scan the current tree and locally
 built Core/CPU/GPU images, including unfixed high/critical OS and native-library
-advisories. Images are never published or deployed by these workflows.
+advisories. Image scans also run for Dockerfile/encoder pull requests and gate
+Core releases. Trivy is pinned to 0.75.0; Go binaries use Go 1.27.2.
+Images are never published or deployed by these workflows.
 
 Actions are pinned to reviewed commit SHAs. PR jobs have read-only repository
 permissions, do not persist checkout credentials, and receive no production
diff --git a/lib/mave_core/encoding_booster/bundle.ex b/lib/mave_core/encoding_booster/bundle.ex
index c004b56..3d45753 100644
--- a/lib/mave_core/encoding_booster/bundle.ex
+++ b/lib/mave_core/encoding_booster/bundle.ex
@@ -155,15 +155,24 @@ defmodule MaveCore.EncodingBooster.Bundle do
            cwd: String.to_charlist(extract_root),
            file_list: file_list
          ) do
-      {:ok, _files} -> :ok
-      {:error, :badarg} -> extract_streamed_store_entries(bundle_path, extract_root, entries)
-      {:error, reason} -> {:error, {:invalid_encoding_booster_bundle, reason}}
+      {:ok, _files} ->
+        :ok
+
+      {:error, :badarg} ->
+        extract_streamed_store_entries(bundle_path, extract_root, entries)
+
+      {:error, {_path, {:file, :write_file_info, _args}, :badarg}} ->
+        extract_streamed_store_entries(bundle_path, extract_root, entries)
+
+      {:error, reason} ->
+        {:error, {:invalid_encoding_booster_bundle, reason}}
     end
   end
 
   # Go's archive/zip writes data descriptors when entries are streamed to an
   # HTTP response. OTP can list those archives but :zip.extract/2 rejects them
-  # with :badarg, so copy the already-validated stored entries by their central
+  # with :badarg (including invalid zero-date metadata in newer OTP versions),
+  # so copy the already-validated stored entries by their central
   # directory offsets and verify each data descriptor while doing so.
   defp extract_streamed_store_entries(bundle_path, extract_root, entries) do
     with {:ok, safe_bundle_path} <- SafeFile.readable_path(bundle_path),
diff --git a/lib/mave_core/safe_file.ex b/lib/mave_core/safe_file.ex
index 75a79e9..2fdc7cb 100644
--- a/lib/mave_core/safe_file.ex
+++ b/lib/mave_core/safe_file.ex
@@ -39,7 +39,7 @@ defmodule MaveCore.SafeFile do
   # sobelow_skip ["Traversal.FileModule"]
   def stream_read!(path, modes \\ [], chunk_size \\ @default_stream_chunk) do
     {:ok, expanded} = readable_path(path)
-    File.stream!(expanded, modes, chunk_size)
+    File.stream!(expanded, chunk_size, modes)
   end
 
   # sobelow_skip ["Traversal.FileModule"]
diff --git a/mix.exs b/mix.exs
index 18cdc58..eb48a75 100644
--- a/mix.exs
+++ b/mix.exs
@@ -5,7 +5,7 @@ defmodule MaveCore.MixProject do
     [
       app: :mave_core,
       version: "0.2.1",
-      elixir: "~> 1.15",
+      elixir: "~> 1.20",
       elixirc_paths: elixirc_paths(Mix.env()),
       start_permanent: Mix.env() == :prod,
       aliases: aliases(),
diff --git a/test/mave_core/encoding_booster_test.exs b/test/mave_core/encoding_booster_test.exs
index e9597c0..3f8e049 100644
--- a/test/mave_core/encoding_booster_test.exs
+++ b/test/mave_core/encoding_booster_test.exs
@@ -685,6 +685,35 @@ defmodule MaveCore.EncodingBoosterTest do
     File.rm_rf!(output_path <> ".bundle")
   end
 
+  test "rejects corrupted streamed ZIP entries with zero-date metadata", %{
+    output_path: output_path
+  } do
+    configure_booster()
+    Req.default_options(plug: {Req.Test, __MODULE__})
+
+    bundle =
+      :binary.replace(
+        go_streaming_encoding_bundle(),
+        <<"segment", 0x50, 0x4B, 0x07, 0x08>>,
+        <<"corrupt", 0x50, 0x4B, 0x07, 0x08>>
+      )
+
+    Req.Test.expect(__MODULE__, fn conn ->
+      conn
+      |> put_resp_header("content-type", "application/vnd.mave.encoding-bundle+zip")
+      |> send_resp(200, bundle)
+    end)
+
+    assert {:error, :incomplete_encoding_booster_bundle} =
+             EncodingBooster.encode_to_file(
+               "https://source.example/video.mp4",
+               output_path,
+               package_hls: true
+             )
+
+    refute File.exists?(output_path)
+  end
+
   test "packages an encoded rendition through the HLS-only booster endpoint", %{
     output_path: output_path
   } do