diff --git a/.tools/requirements/requirements.txt b/.tools/requirements/requirements.txt
index 9738d19..1983fe8 100644
--- a/.tools/requirements/requirements.txt
+++ b/.tools/requirements/requirements.txt
@@ -22,5 +22,3 @@ ruamel.yaml==0.18.5
 scipy==1.11.3
 sympy==1.12
 uncertainties==3.1.7
-# ? For caching with dill, unlike the stock PyPI version
-cachier@git+https://github.com/blakeNaccarato/cachier@0892f53dc8fd9fb8a7f959305a1a9ec692876dc0
diff --git a/.tools/requirements/requirements_both.txt b/.tools/requirements/requirements_both.txt
index a87fc91..ef1ff6a 100644
--- a/.tools/requirements/requirements_both.txt
+++ b/.tools/requirements/requirements_both.txt
@@ -4,6 +4,8 @@
 seaborn==0.13.0
 # ? Additional testing plugin
 pytest-plt==1.1.0
+# ? For caching with dill, unlike the stock PyPI version
+cachier@git+https://github.com/blakeNaccarato/cachier@0892f53dc8fd9fb8a7f959305a1a9ec692876dc0
 
 # Type checking
 pyright==1.1.336
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5b6358b..6f988c1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,7 +14,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Pydantic models for boiler projects
 - Jupyter notebook namespace helpers for module code and tests
 - Common thermal data model fit for boiler projects
-- General caching helpers and notebook namespace caching, useful in tests
+- General caching helpers and notebook namespace caching, useful in tests (needs extra `pip install cachier@git+https://github.com/blakeNaccarato/cachier@0892f53dc8fd9fb8a7f959305a1a9ec692876dc0`)
 - Common paths and helpers for walking project modules, useful in tests
 - Useful constructs for warning filtering, especially in tests
 
diff --git a/pyproject.toml b/pyproject.toml
index 3fa6bdc..a39a598 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,8 +28,6 @@ dependencies = [
     "scipy>=1.11.1",
     "sympy>=1.12",
     "uncertainties>=3.1.7",
-    # ? For caching with dill, unlike the stock PyPI version
-    "cachier@git+https://github.com/blakeNaccarato/cachier@0892f53dc8fd9fb8a7f959305a1a9ec692876dc0",
 ]
 [[project.authors]]
 name = "Blake Naccarato, Kwang Jin Kim"
@@ -45,7 +43,10 @@ Tracker = "https://github.com/blakeNaccarato/boilercore/issues"
 output_format = "human_detailed"
 code = ["src"]
 deps = ["pyproject.toml"]
-ignore_undeclared = ["dvc"] # Optional dependency for `boilercore.notebooks.report`
+ignore_undeclared = [
+    "cachier", # Can't specify my fork here for now. Used only in tests
+    "dvc",     # Optional dependency for `boilercore.notebooks.report`
+]
 ignore_unused = [
     "gmpy2",     # for faster sympy computations
     "nbconvert", # boilercv.pre_repro.export_notebook