diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 3251090d8..19343563c 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -68,7 +68,9 @@ jobs:
 
       - name: Install system dependencies (macOS)
         if: runner.os == 'macOS'
-        run: brew cask install xquartz
+        run: |
+          brew cask install xquartz
+          brew install imagemagick@6
 
       - name: Install dependencies
         run: |
diff --git a/.github/workflows/pkgdown.yaml b/.github/workflows/pkgdown.yaml
index db36255ad..c937673ba 100644
--- a/.github/workflows/pkgdown.yaml
+++ b/.github/workflows/pkgdown.yaml
@@ -22,7 +22,9 @@ jobs:
 
       - name: Install system dependencies (macOS)
         if: runner.os == 'macOS'
-        run: brew cask install xquartz
+        run: |
+          brew cask install xquartz
+          brew install imagemagick@6
 
       - name: Query dependencies
         run: |