diff --git a/conda-environment.yml b/conda-environment.yml
index a63c97f12..e417e6686 100644
--- a/conda-environment.yml
+++ b/conda-environment.yml
@@ -12,7 +12,7 @@ dependencies:
   - matplotlib=3.10.9
   - numpy=2.2.5
   - pandas=2.3.3
-  - pip=26.1
+  - pip=26.1.1
   - wordcloud=1.9.6
   - monotonic=1.6
   - plotly=6.6.0 # v6.7.0 in pyproject.toml not yet available in conda-forge
diff --git a/pyproject.toml b/pyproject.toml
index 6aae914d6..9e1e66c39 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ dependencies = [
     "matplotlib==3.10.9",
     "numpy==2.2.5",
     "pandas==2.3.3",
-    "pip==26.1",
+    "pip==26.1.1",
     # --- Visualization ---
     "wordcloud==1.9.6",
     "monotonic==1.6",
diff --git a/uv.lock b/uv.lock
index a0576a1a5..8dfaf0376 100644
--- a/uv.lock
+++ b/uv.lock
@@ -133,7 +133,7 @@ requires-dist = [
     { name = "numpy", specifier = "==2.2.5" },
     { name = "optuna", specifier = "==4.7.0" },
     { name = "pandas", specifier = "==2.3.3" },
-    { name = "pip", specifier = "==26.1" },
+    { name = "pip", specifier = "==26.1.1" },
     { name = "plotly", extras = ["kaleido"], specifier = "==6.7.0" },
     { name = "scikit-learn", specifier = "==1.8.0" },
     { name = "seaborn", specifier = "==0.13.2" },
@@ -932,11 +932,11 @@ wheels = [
 
 [[package]]
 name = "pip"
-version = "26.1"
+version = "26.1.1"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/73/7e/d2b04004e1068ad4fdfa2f227b839b5d03e602e47cdbbf49de71137c9546/pip-26.1.tar.gz", hash = "sha256:81e13ebcca3ffa8cc85e4deff5c27e1ee26dea0aa7fc2f294a073ac208806ff3", size = 1840316, upload-time = "2026-04-26T21:00:05.406Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/b6/48/cb9b7a682f6fe01a4221e1728941dd4ac3cd9090a17db3779d6ff490b602/pip-26.1.1.tar.gz", hash = "sha256:d36762751d156a4ee895de8af39aa0abeeeb577f93a2eca6ab62467bbf0f8a78", size = 1840400, upload-time = "2026-05-04T19:02:21.248Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/70/7a/be4bd8bcbb24ea475856dd68159d78b03b2bb53dae369f69c9606b8888f5/pip-26.1-py3-none-any.whl", hash = "sha256:4e8486d821d814b77319acb7b9e8bf5a4ee7590a643e7cb21029f209be8573c1", size = 1812804, upload-time = "2026-04-26T21:00:03.194Z" },
+    { url = "https://files.pythonhosted.org/packages/3a/eb/fea4d1d51c49832120f7f285d07306db3960f423a2612c6057caf3e8196f/pip-26.1.1-py3-none-any.whl", hash = "sha256:99cb1c2899893b075ff56e4ed0af55669a955b49ad7fb8d8603ecdaf4ed653fb", size = 1812777, upload-time = "2026-05-04T19:02:18.9Z" },
 ]
 
 [[package]]