diff --git a/README.md b/README.md
index c2ce3e9..19746ff 100644
--- a/README.md
+++ b/README.md
@@ -63,11 +63,19 @@ Ghidra headless + `extract_engine_surface.py` → snapshot → import do Postgre
 Worker (`docker/worker.Dockerfile`, `eclipse-temurin:21-jdk`) pobiera Ghidrę i ustawia
 `GHIDRA_HOME=/opt/ghidra`. Wersja jest przypięta w `ARG GHIDRA_URL`. Jeśli build padnie na pobieraniu,
 nadpisz URL realnym wydaniem z [releases NSA](https://github.com/NationalSecurityAgency/ghidra/releases)
-(nazwa pliku: `ghidra_<wer>_PUBLIC_<data>.zip`):
+(nazwa pliku: `ghidra_<wer>_PUBLIC_<data>.zip`).
+
+> **Musi to być Ghidra ≤ 11.3.x.** Ekstraktor to skrypt **Pythona (`.py`)**, który Ghidra w trybie
+> headless uruchamia przez wbudowanego **Jythona**. Ghidra **11.4+ / 12.x usunęły Jythona** — tam
+> `.py` headless wymaga **PyGhidry** (CPython), której ten obraz nie inicjalizuje, i dostaniesz
+> `Ghidra was not started with PyGhidra. Python is not available` (analiza przejdzie, ale post-skrypt
+> nie wyemituje snapshotu). Domyślny `GHIDRA_URL` celuje w 11.2.1 (z Jythonem). Chcesz zostać na 12.x?
+> Trzeba doinstalować `pyghidra` i odpalać headless przez PyGhidrę — sam skrypt jest CPython-kompatybilny,
+> więc zadziała, gdy interpreter wstanie (patrz dokumentacja PyGhidra w danej wersji Ghidry).
 
 ```bash
 docker compose build worker \
-  --build-arg GHIDRA_URL=https://github.com/NationalSecurityAgency/ghidra/releases/download/Ghidra_11.3.2_build/ghidra_11.3.2_PUBLIC_20250415.zip
+  --build-arg GHIDRA_URL=https://github.com/NationalSecurityAgency/ghidra/releases/download/Ghidra_11.2.1_build/ghidra_11.2.1_PUBLIC_20241105.zip
 docker compose up
 ```
 
diff --git a/docker/api.Dockerfile b/docker/api.Dockerfile
index 350d25e..606a144 100644
--- a/docker/api.Dockerfile
+++ b/docker/api.Dockerfile
@@ -9,9 +9,8 @@ COPY ams ./ams
 COPY ghidra_scripts ./ghidra_scripts
 COPY snapshots ./snapshots
 
-# Editable install keeps ams + ghidra_scripts co-located (the worker resolves the script
-# path relative to the package). The API needs the queue client too, to enqueue jobs.
-RUN pip install --no-cache-dir -e ".[api]" rq redis "psycopg[binary]>=3.1"
+# The API needs the queue client too, to enqueue jobs.
+RUN pip install --no-cache-dir ".[api]" rq redis "psycopg[binary]>=3.1"
 
 ENV AMS_UPLOAD_DIR=/data/uploads
 EXPOSE 8000
diff --git a/docker/worker.Dockerfile b/docker/worker.Dockerfile
index 62224c2..422928e 100644
--- a/docker/worker.Dockerfile
+++ b/docker/worker.Dockerfile
@@ -3,9 +3,16 @@
 #
 # Override the Ghidra build without editing this file:
 #   docker build --build-arg GHIDRA_URL=https://github.com/.../ghidra_X_PUBLIC_DATE.zip ...
+#
+# IMPORTANT: the extractor is a Python (.py) headless post-script, which Ghidra runs via its
+# bundled **Jython**. Ghidra 11.4+ / 12.x REMOVED Jython - there `.py` headless needs PyGhidra
+# (CPython), which this image doesn't initialise, and you'll get:
+#     "Ghidra was not started with PyGhidra. Python is not available"
+# So pin a Jython-era release (<= 11.3.x). If this URL 404s, copy the exact filename from
+# https://github.com/NationalSecurityAgency/ghidra/releases (form: ghidra_<ver>_PUBLIC_<date>.zip).
 FROM eclipse-temurin:21-jdk-jammy
 
-ARG GHIDRA_URL=https://github.com/NationalSecurityAgency/ghidra/releases/download/Ghidra_11.3_build/ghidra_11.3_PUBLIC_20250205.zip
+ARG GHIDRA_URL=https://github.com/NationalSecurityAgency/ghidra/releases/download/Ghidra_11.2.1_build/ghidra_11.2.1_PUBLIC_20241105.zip
 
 # Runtime deps: python (the package), unzip/wget (fetch Ghidra), libarchive-tools (bsdtar:
 # unpacks ISO9660 + ZIP game archives).
@@ -19,6 +26,8 @@ RUN wget -q "$GHIDRA_URL" -O /tmp/ghidra.zip \
     && mv /opt/ghidra_* /opt/ghidra \
     && rm /tmp/ghidra.zip
 
+RUN pip3 install --no-cache-dir --upgrade pip setuptools wheel
+
 ENV GHIDRA_HOME=/opt/ghidra
 ENV AMS_GHIDRA_SCRIPTS=/app/ghidra_scripts
 ENV AMS_UPLOAD_DIR=/data/uploads
@@ -29,7 +38,7 @@ COPY ams ./ams
 COPY ghidra_scripts ./ghidra_scripts
 COPY snapshots ./snapshots
 
-RUN pip3 install --no-cache-dir -e ".[api,acquire,worker]"
+RUN pip3 install --no-cache-dir ".[api,acquire,worker]"
 
 # Drain the 'acquire' queue. Shell form so $REDIS_URL expands at runtime.
 CMD rq worker --url "${REDIS_URL:-redis://redis:6379/0}" acquire