diff --git a/.github/workflows/docsgen.yml b/.github/workflows/docsgen.yml
index 105f9b6..220a1da 100644
--- a/.github/workflows/docsgen.yml
+++ b/.github/workflows/docsgen.yml
@@ -22,7 +22,7 @@ jobs:
       run: sudo apt update
 
     - name: Install Packages
-      run: sudo apt-get install -y python3-pip python3-dev python3-setuptools python3-pil
+      run: sudo apt-get install -y python3-pip python3-dev python3-setuptools python3-pil gifsicle
 
     - name: Install openscad-docsgen
       run: sudo pip3 install openscad_docsgen
diff --git a/.github/workflows/forced_docsgen.yml b/.github/workflows/forced_docsgen.yml
index 0d70d94..6393b90 100644
--- a/.github/workflows/forced_docsgen.yml
+++ b/.github/workflows/forced_docsgen.yml
@@ -20,7 +20,7 @@ jobs:
       run: sudo apt update
 
     - name: Install Packages
-      run: sudo apt-get install -y python3-pip python3-dev python3-setuptools python3-pil
+      run: sudo apt-get install -y python3-pip python3-dev python3-setuptools python3-pil gifsicle
 
     - name: Install openscad-docsgen
       run: sudo pip3 install openscad_docsgen
diff --git a/.github/workflows/testwf.yml b/.github/workflows/testwf.yml
index 0c33682..18ee4e1 100644
--- a/.github/workflows/testwf.yml
+++ b/.github/workflows/testwf.yml
@@ -20,7 +20,7 @@ jobs:
       run: sudo apt update
 
     - name: Install Packages
-      run: sudo apt-get install -y python3-pip python3-dev python3-setuptools python3-pil
+      run: sudo apt-get install -y python3-pip python3-dev python3-setuptools python3-pil gifsicle
 
     - name: Install openscad-docsgen
       run: sudo pip3 install openscad_docsgen