diff --git a/environment.yml b/environment.yml
index d91d37ffc1..33c2eac6fe 100644
--- a/environment.yml
+++ b/environment.yml
@@ -5,6 +5,8 @@ channels:
   - defaults
 dependencies:
   - cudatoolkit=11.6
+  # Avoid libmamba selecting cuda-version 11.8, which conflicts with cudatoolkit 11.6.
+  - cuda-version=11.6
   - plyfile
   - python=3.7.13
   - pip=22.3.1
diff --git a/submodules/diff-gaussian-rasterization b/submodules/diff-gaussian-rasterization
index 9c5c2028f6..5e1f681ce2 160000
--- a/submodules/diff-gaussian-rasterization
+++ b/submodules/diff-gaussian-rasterization
@@ -1 +1 @@
-Subproject commit 9c5c2028f6fbee2be239bc4c9421ff894fe4fbe0
+Subproject commit 5e1f681ce26cb3843551e329d3aacc6a03c784ad
diff --git a/submodules/fused-ssim b/submodules/fused-ssim
index 1272e21a28..4348f1d3ec 160000
--- a/submodules/fused-ssim
+++ b/submodules/fused-ssim
@@ -1 +1 @@
-Subproject commit 1272e21a282342e89537159e4bad508b19b34157
+Subproject commit 4348f1d3ecab15e66fd25d73e4cc2d600b0157fe
diff --git a/submodules/simple-knn b/submodules/simple-knn
index 86710c2d4b..3587f423f0 160000
--- a/submodules/simple-knn
+++ b/submodules/simple-knn
@@ -1 +1 @@
-Subproject commit 86710c2d4b46680c02301765dd79e465819c8f19
+Subproject commit 3587f423f08bc0086cf4c56bfa367f9c21a08de2