diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 06f70554..2c6a5a88 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -34,9 +34,10 @@ jobs:
         with:
           miniforge-version: latest
           python-version: "3.11"
-          mamba-version: "1.5.10"
           activate-environment: test-environment
           channels: conda-forge
+          conda-remove-defaults: true
+          channel-priority: strict
 
       - name: Set cache environment variables
         shell: bash -l {0}
@@ -111,9 +112,10 @@ jobs:
         with:
           miniforge-version: latest
           python-version: ${{ matrix.python-version }}
-          mamba-version: "1.5.10"
           activate-environment: test-environment
           channels: conda-forge
+          conda-remove-defaults: true
+          channel-priority: strict
 
       - name: Set cache environment variables
         shell: bash -l {0}
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 34b4a131..b8010f86 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -2,7 +2,7 @@ exclude: '^$'
 fail_fast: false
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: 'v0.8.1'
+    rev: 'v0.8.6'
     hooks:
       - id: ruff
         args: ["--fix"]