diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 93f44ac7..6cb4563d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -149,6 +149,16 @@ jobs:
       - run: pip install mypy==2.4.0 types-PyYAML types-jsonschema
       - name: mypy
         run: mypy
+      # Dependency hygiene, config in [tool.deptry] of pyproject.toml: an import
+      # not declared (DEP001), a runtime dependency never imported (DEP002), an
+      # import that only resolves through another package's dependencies (DEP003),
+      # a dev-extra tool imported by the package (DEP004). Here, not in `static`:
+      # deptry maps import names to packages through the installed lock.
+      - run: pip install deptry==0.25.1
+        if: ${{ !cancelled() }}
+      - name: deptry
+        if: ${{ !cancelled() }}
+        run: deptry .
 
   test:
     name: Tests (py${{ matrix.python-version }})
diff --git a/dokimi/CONTRIBUTING.md b/dokimi/CONTRIBUTING.md
index 1ef0847a..66bb38d0 100644
--- a/dokimi/CONTRIBUTING.md
+++ b/dokimi/CONTRIBUTING.md
@@ -63,6 +63,7 @@ the same checks CI runs are:
 ```bash
 ruff check .                              # lint
 mypy                                      # type check (config in pyproject.toml)
+deptry .                                  # declared deps match the imports ([tool.deptry])
 python -m dokimi.schema_check benchmarks/spec.v1.yaml     # validate the benchmark spec
 python -m dokimi.config_check             # registry drift check
 pytest                                    # tests (offline: connecting off loopback fails the test)
@@ -103,6 +104,13 @@ CI additionally holds a PR to:
   a list). A new page goes in two places: the `docs/README.md` index
   (`tests/test_docs_links.py` checks it) and `nav:` in `mkdocs.yml` (the
   build fails on a page missing from it). `mkdocs serve` previews the site.
+- **Dependencies match the imports** — `deptry .` (config in `[tool.deptry]` of
+  `pyproject.toml`). A third-party module the package, `cli.py` or `scripts/`
+  imports is declared in `[project.dependencies]` and `requirements.txt` (or an
+  extra), even when another dependency already pulls it in; a runtime dependency
+  nothing imports is dropped; the `dev` extra's tools are never imported by the
+  package. A dependency that is declared only to cap a transitive version gets a
+  `per_rule_ignores` entry with the reason.
 - **Workflow lint** — `zizmor --offline --min-severity medium .github/workflows` when you
   edit a workflow.
 - **Changelog fragment** — a PR that changes the package (`dokimi/`) adds one to
diff --git a/dokimi/changelog.d/20261018_120000_napetrov_ci-deptry.md b/dokimi/changelog.d/20261018_120000_napetrov_ci-deptry.md
new file mode 100644
index 00000000..441a9971
--- /dev/null
+++ b/dokimi/changelog.d/20261018_120000_napetrov_ci-deptry.md
@@ -0,0 +1,9 @@
+### Changed
+
+- **Install dependencies follow the imports** — `pip install dokimi` no longer
+  installs `beautifulsoup4` (and its `soupsieve`), which nothing imports, and no
+  longer lists `anthropic` itself: it still comes in through
+  `langchain-anthropic`. `langchain-openai` and `langchain-core`, which
+  `eval ragas` imports, are now declared (`>=1.0,<2`) instead of arriving only
+  through `ragas`. Code that imported `bs4` from dokimi's environment installs it
+  itself.
diff --git a/dokimi/pyproject.toml b/dokimi/pyproject.toml
index b13d0fbb..6ce437c2 100644
--- a/dokimi/pyproject.toml
+++ b/dokimi/pyproject.toml
@@ -32,16 +32,16 @@ dependencies = [
   "httpx>=0.27.0",
   "numpy>=1.24.0",
   "scipy>=1.11.0",
-  "beautifulsoup4>=4.12.0",
   "PyGithub>=2.1.0",
   "ragas>=0.3.0,<0.4",
   # Every ragas release imports langchain_community.chat_models.vertexai, which 0.4.2 removed.
   "langchain-community<0.4.2",
-  # eval ragas wraps the judge in ChatAnthropic for the anthropic provider.
+  # eval ragas wraps the judge in ChatOpenAI or ChatAnthropic, typed as langchain-core's BaseChatModel.
   "langchain-anthropic>=1.0,<2",
+  "langchain-openai>=1.0,<2",
+  "langchain-core>=1.0,<2",
   "datasets>=2.20,<6",
   "openai>=1.51,<3",
-  "anthropic~=1.12",
 ]
 
 [project.optional-dependencies]
@@ -108,6 +108,26 @@ md_header_level = "2"
 entry_title_template = "[{{ version }}] — {{ date.strftime('%Y-%m-%d') }}"
 version = "literal: pyproject.toml: project.version"
 
+# Dependency hygiene (deptry, CI's typecheck job): every third-party import in
+# the package, cli.py and scripts/ is declared in [project.dependencies] or an
+# extra, imported directly rather than through another package's dependencies,
+# and every declared runtime dependency is imported. Run from dokimi/ in an env
+# with the lock installed, so import names come from the installed metadata.
+# tests/ is skipped (deptry's default exclude): the test deps live in
+# requirements-test.txt and the dev extra.
+[tool.deptry]
+extend_exclude = [
+  # The docs build's hooks: their deps are requirements-docs.txt, not the wheel's.
+  "scripts/docs",
+]
+# Tools in the dev extra (pytest and plugins, ruff, mypy, scriv), never imported by
+# the package. A dev dep imported from the package is DEP004.
+optional_dependencies_dev_groups = ["dev"]
+
+[tool.deptry.per_rule_ignores]
+# Declared only to cap the version ragas resolves (see the comment in [project]).
+DEP002 = ["langchain-community"]
+
 [tool.ruff]
 line-length = 100
 target-version = "py311"
diff --git a/dokimi/requirements.lock.txt b/dokimi/requirements.lock.txt
index 682b3543..2539cc95 100644
--- a/dokimi/requirements.lock.txt
+++ b/dokimi/requirements.lock.txt
@@ -15,9 +15,7 @@ annotated-doc==0.0.5
 annotated-types==0.8.0
     # via pydantic
 anthropic==1.13.0
-    # via
-    #   -r requirements.txt
-    #   langchain-anthropic
+    # via langchain-anthropic
 anyio==4.15.1
     # via
     #   anthropic
@@ -32,8 +30,6 @@ attrs==26.1.0
     #   aiohttp
     #   jsonschema
     #   referencing
-beautifulsoup4==4.15.0
-    # via -r requirements.txt
 boto3==1.43.109
     # via litellm
 botocore==1.43.109
@@ -200,6 +196,7 @@ langchain-community==0.4.1
     #   ragas
 langchain-core==1.6.7
     # via
+    #   -r requirements.txt
     #   langchain
     #   langchain-anthropic
     #   langchain-classic
@@ -212,7 +209,9 @@ langchain-core==1.6.7
     #   langgraph-sdk
     #   ragas
 langchain-openai==1.6.7
-    # via ragas
+    # via
+    #   -r requirements.txt
+    #   ragas
 langchain-protocol==0.0.19
     # via
     #   langchain-core
@@ -446,8 +445,6 @@ sniffio==1.3.1
     #   anthropic
     #   langsmith
     #   openai
-soupsieve==2.10
-    # via beautifulsoup4
 sqlalchemy==2.1.4
     # via
     #   langchain-classic
@@ -486,7 +483,6 @@ typing-extensions==4.16.0
     #   aiosignal
     #   anthropic
     #   anyio
-    #   beautifulsoup4
     #   httpx2
     #   huggingface-hub
     #   langchain-core
diff --git a/dokimi/requirements.txt b/dokimi/requirements.txt
index 7f03e616..1fbabe70 100644
--- a/dokimi/requirements.txt
+++ b/dokimi/requirements.txt
@@ -4,16 +4,16 @@
 ragas>=0.3.0,<0.4
 # Every ragas release imports langchain_community.chat_models.vertexai, which 0.4.2 removed.
 langchain-community<0.4.2
-# eval ragas wraps the judge in ChatAnthropic for the anthropic provider.
+# eval ragas wraps the judge in ChatOpenAI or ChatAnthropic, typed as langchain-core's BaseChatModel.
 langchain-anthropic>=1.0,<2
+langchain-openai>=1.0,<2
+langchain-core>=1.0,<2
 datasets>=2.20,<6
 openai>=1.51,<3
-anthropic~=1.12
 PyYAML>=6.0.1,<7
 jsonschema>=4.20,<5
 litellm>=1.105.0
 httpx>=0.27.0
 PyGithub>=2.1.0
-beautifulsoup4>=4.12.0
 numpy>=1.24.0
 scipy>=1.11.0