diff --git a/.cirrus.yml b/.cirrus.yml
index cb526ae9724..fb65af07990 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -44,7 +44,7 @@ freebsd_build_task:
 #     - brew install cmake
 #     - brew install gettext
 #     # NOTE: Specify an explicit Asciidoctor version to help ensure reproducible builds
-#     - sudo gem install asciidoctor -v 2.0.16 --no-document
+#     - sudo gem install asciidoctor -v 2.0.22 --no-document
 #     # gcc6+ is currently required to bootstrap vcpkg on macOS
 #     - brew install gcc@7
 #     - sudo bundle install --gemfile="macosx/BuildBot/Gemfile"
diff --git a/.github/workflows/CI_macos.yml b/.github/workflows/CI_macos.yml
index 3645285a8d8..89e533dbb5b 100644
--- a/.github/workflows/CI_macos.yml
+++ b/.github/workflows/CI_macos.yml
@@ -86,7 +86,7 @@ jobs:
         
         # NOTE: Specify an explicit Asciidoctor version to help ensure reproducible builds
         echo "::group::gem install asciidoctor"
-        gem install asciidoctor -v 2.0.16 --no-document
+        gem install asciidoctor -v 2.0.22 --no-document
         echo "::endgroup::"
 
         #if (brew outdated | grep cmake > /dev/null); then echo "upgrading CMake"; brew upgrade cmake; fi
diff --git a/.github/workflows/CI_windows.yml b/.github/workflows/CI_windows.yml
index 854310ee68a..cf3b3b27db8 100644
--- a/.github/workflows/CI_windows.yml
+++ b/.github/workflows/CI_windows.yml
@@ -103,7 +103,7 @@ jobs:
       id: asciidoctor-dl
       run: |
         echo "Installing Asciidoctor"
-        gem install asciidoctor -v 2.0.16 --no-document | Out-Null
+        gem install asciidoctor -v 2.0.22 --no-document | Out-Null
         echo "Installing Asciidoctor... finished"
         $AsciidoctorBat = (Get-Command asciidoctor.bat).Path
         echo "Asciidoctor.bat: ${AsciidoctorBat}"