diff --git a/.github/environment/pixi.toml b/.github/environment/pixi.toml
index aa9a5b89..eed0e558 100644
--- a/.github/environment/pixi.toml
+++ b/.github/environment/pixi.toml
@@ -30,6 +30,7 @@ r44 = {features = ["r44"]}
 [dependencies]
 "gsl" = "*"
 "bioconductor-bioccheck" = "*"
+"r-rcpparmadillo" = ">=15"
 "r-devtools" = "*"
 "r-rcmdcheck" = "*"
 "r-covr" = "*"
diff --git a/.github/recipe/recipe.yaml b/.github/recipe/recipe.yaml
index d04856cf..dc9245b3 100644
--- a/.github/recipe/recipe.yaml
+++ b/.github/recipe/recipe.yaml
@@ -20,8 +20,8 @@ build:
 requirements:
   build:
     - ${{ compiler('c') }}
+    - ${{ stdlib('c') }}
     - ${{ compiler('cxx') }}
-    - ${{ compiler('fortran') }}
   host:
     - bioconductor-iranges
     - bioconductor-qvalue
diff --git a/.github/recipe/variant_r43.yaml b/.github/recipe/variant_r43.yaml
index 21bfbbff..3973de52 100644
--- a/.github/recipe/variant_r43.yaml
+++ b/.github/recipe/variant_r43.yaml
@@ -1,2 +1,14 @@
+MACOSX_DEPLOYMENT_TARGET:
+  - '11.0'
+c_stdlib_version:
+  - if: linux
+    then: 2.17
+  - if: osx
+    then: 11.0
+c_stdlib:
+  - if: linux
+    then: sysroot
+  - if: osx
+    then: macosx_deployment_target
 r_base:
   - 4.3
diff --git a/.github/recipe/variant_r44.yaml b/.github/recipe/variant_r44.yaml
index b69c4278..ccd3b536 100644
--- a/.github/recipe/variant_r44.yaml
+++ b/.github/recipe/variant_r44.yaml
@@ -1,2 +1,14 @@
+MACOSX_DEPLOYMENT_TARGET:
+  - '11.0'
+c_stdlib_version:
+  - if: linux
+    then: 2.17
+  - if: osx
+    then: 11.0
+c_stdlib:
+  - if: linux
+    then: sysroot
+  - if: osx
+    then: macosx_deployment_target
 r_base:
   - 4.4
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 549e6bd5..f70081a9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,39 +44,7 @@ jobs:
 
       #- name: Run BiocCheck
         #run: pixi run bioccheck
-        
-  ci_osx-64:
-    name: osx-64 CI
-    runs-on: macos-13
-    strategy:
-      fail-fast: false
-      matrix:
-        environment: ["r43", "r44"]
-    
-    steps:
-      - name: Checkout pull request branch
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
 
-      - name: Create TOML from recipe
-        run: .github/workflows/create_toml_from_yaml.sh ${GITHUB_WORKSPACE}
-
-      - name: Setup pixi
-        uses: prefix-dev/setup-pixi@v0.9.2
-
-      - name: Run unit tests
-        run: pixi run --environment ${{ matrix.environment }} devtools_test
-
-      #- name: Run R CMD CHECK
-        #run: pixi run rcmdcheck
-
-      #- name: Run BiocCheckGitClone
-        #run: pixi run bioccheck_git_clone
-
-      #- name: Run BiocCheck
-        #run: pixi run bioccheck
-  
   ci_osx-arm64:
     name: osx-arm64 CI
     runs-on: macos-14
@@ -84,7 +52,7 @@ jobs:
       fail-fast: false
       matrix:
         environment: ["r43", "r44"]
-    
+
     steps:
       - name: Checkout pull request branch
         uses: actions/checkout@v4
diff --git a/DESCRIPTION b/DESCRIPTION
index 3ece6a87..87e3c40b 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -62,4 +62,4 @@ LinkingTo:
     RcppGSL
 NeedsCompilation: yes
 VignetteBuilder: knitr
-RoxygenNote: 7.3.2
+RoxygenNote: 7.3.3