diff --git a/conda/environments/all_cuda-118_arch-x86_64.yaml b/conda/environments/all_cuda-118_arch-x86_64.yaml
index 6dfc4771a..3fffb3dc7 100644
--- a/conda/environments/all_cuda-118_arch-x86_64.yaml
+++ b/conda/environments/all_cuda-118_arch-x86_64.yaml
@@ -35,9 +35,9 @@ dependencies:
 - rapids-build-backend>=0.3.0,<0.4.0.dev0
 - rapids-logger==0.1.*,>=0.0.0a0
 - scikit-build-core >=0.10.0
-- sphinx
 - sphinx-copybutton
 - sphinx-markdown-tables
+- sphinx<=8.2.0
 - sphinx_rtd_theme
 - sysroot_linux-64==2.28
 name: all_cuda-118_arch-x86_64
diff --git a/conda/environments/all_cuda-128_arch-x86_64.yaml b/conda/environments/all_cuda-128_arch-x86_64.yaml
index c4eddb72a..807456000 100644
--- a/conda/environments/all_cuda-128_arch-x86_64.yaml
+++ b/conda/environments/all_cuda-128_arch-x86_64.yaml
@@ -34,9 +34,9 @@ dependencies:
 - rapids-build-backend>=0.3.0,<0.4.0.dev0
 - rapids-logger==0.1.*,>=0.0.0a0
 - scikit-build-core >=0.10.0
-- sphinx
 - sphinx-copybutton
 - sphinx-markdown-tables
+- sphinx<=8.2.0
 - sphinx_rtd_theme
 - sysroot_linux-64==2.28
 name: all_cuda-128_arch-x86_64
diff --git a/dependencies.yaml b/dependencies.yaml
index 8b3b7a44a..303769bda 100644
--- a/dependencies.yaml
+++ b/dependencies.yaml
@@ -304,7 +304,7 @@ dependencies:
           - nbsphinx
           - numba>=0.59.1,<0.61.0a0
           - numpydoc
-          - sphinx
+          - sphinx<=8.2.0
           - sphinx_rtd_theme
           - sphinx-copybutton
           - sphinx-markdown-tables