diff --git a/cmake/cpp.cmake b/cmake/cpp.cmake
index 269275b0af..d3322843bf 100644
--- a/cmake/cpp.cmake
+++ b/cmake/cpp.cmake
@@ -601,7 +601,7 @@ if(BUILD_CXX_DOC)
   if(DOXYGEN_FOUND)
     configure_file(${PROJECT_SOURCE_DIR}/ortools/cpp/Doxyfile.in ${PROJECT_BINARY_DIR}/cpp/Doxyfile @ONLY)
     file(DOWNLOAD
-      https://raw.githubusercontent.com/jothepro/doxygen-awesome-css/v2.1.0/doxygen-awesome.css
+      https://raw.githubusercontent.com/jothepro/doxygen-awesome-css/v2.3.4/doxygen-awesome.css
       ${PROJECT_BINARY_DIR}/cpp/doxygen-awesome.css
       SHOW_PROGRESS
     )
diff --git a/cmake/dotnet.cmake b/cmake/dotnet.cmake
index c6fca998bf..5dc4642e86 100644
--- a/cmake/dotnet.cmake
+++ b/cmake/dotnet.cmake
@@ -507,7 +507,7 @@ if(BUILD_DOTNET_DOC)
   if(DOXYGEN_FOUND)
     configure_file(${PROJECT_SOURCE_DIR}/ortools/dotnet/Doxyfile.in ${PROJECT_BINARY_DIR}/dotnet/Doxyfile @ONLY)
     file(DOWNLOAD
-      https://raw.githubusercontent.com/jothepro/doxygen-awesome-css/v2.1.0/doxygen-awesome.css
+      https://raw.githubusercontent.com/jothepro/doxygen-awesome-css/v2.3.4/doxygen-awesome.css
       ${PROJECT_BINARY_DIR}/dotnet/doxygen-awesome.css
       SHOW_PROGRESS
     )
diff --git a/cmake/java.cmake b/cmake/java.cmake
index c515c0c17b..f72b0ab6e0 100644
--- a/cmake/java.cmake
+++ b/cmake/java.cmake
@@ -569,7 +569,7 @@ if(BUILD_JAVA_DOC)
   if(DOXYGEN_FOUND)
     configure_file(${PROJECT_SOURCE_DIR}/ortools/java/Doxyfile.in ${PROJECT_BINARY_DIR}/java/Doxyfile @ONLY)
     file(DOWNLOAD
-      https://raw.githubusercontent.com/jothepro/doxygen-awesome-css/v2.1.0/doxygen-awesome.css
+      https://raw.githubusercontent.com/jothepro/doxygen-awesome-css/v2.3.4/doxygen-awesome.css
       ${PROJECT_BINARY_DIR}/java/doxygen-awesome.css
       SHOW_PROGRESS
     )
diff --git a/cmake/python.cmake b/cmake/python.cmake
index 0a4641faa3..2b241548fa 100644
--- a/cmake/python.cmake
+++ b/cmake/python.cmake
@@ -867,7 +867,7 @@ if(BUILD_PYTHON_DOC)
   if(DOXYGEN_FOUND)
     configure_file(${PROJECT_SOURCE_DIR}/ortools/python/Doxyfile.in ${PROJECT_BINARY_DIR}/python/Doxyfile @ONLY)
     file(DOWNLOAD
-      https://raw.githubusercontent.com/jothepro/doxygen-awesome-css/v2.1.0/doxygen-awesome.css
+      https://raw.githubusercontent.com/jothepro/doxygen-awesome-css/v2.3.4/doxygen-awesome.css
       ${PROJECT_BINARY_DIR}/python/doxygen-awesome.css
       SHOW_PROGRESS
     )