diff --git a/docs/language_servers.md b/docs/language_servers.md
index c50f6c5..ac39a8e 100644
--- a/docs/language_servers.md
+++ b/docs/language_servers.md
@@ -78,3 +78,17 @@ ln -s ~/.cargo/bin/rust-analyzer /usr/local/bin/rust-language-server
 
 * Additional setup within a Rust project:
     * Add an empty `.rust-format` file to enable style format on save
+
+## GLSL
+Install language server, and create a script to enable server in juCi++:
+```sh
+git clone https://github.com/svenstaro/glsl-language-server --recursive
+cd glsl-language-server
+mkdir build
+cd build
+cmake ..
+make
+# usually as root:
+make install
+echo "/usr/local/bin/glslls --stdin" > /usr/local/bin/glsl-language-server
+```
diff --git a/src/source.cpp b/src/source.cpp
index 74dd2ae..fdad44d 100644
--- a/src/source.cpp
+++ b/src/source.cpp
@@ -66,6 +66,13 @@ Glib::RefPtr<Gsv::Language> Source::guess_language(const boost::filesystem::path
       language = language_manager->get_language("cpphdr");
     else if(file_path.extension() == ".ts" || file_path.extension() == ".tsx" || file_path.extension() == ".jsx" || file_path.extension() == ".flow")
       language = language_manager->get_language("js");
+    else if(file_path.extension() == ".vert" || // listed on https://github.com/KhronosGroup/glslang
+            file_path.extension() == ".frag" ||
+            file_path.extension() == ".tesc" ||
+            file_path.extension() == ".tese" ||
+            file_path.extension() == ".geom" ||
+            file_path.extension() == ".comp")
+      language = language_manager->get_language("glsl");
     else if(!file_path.has_extension()) {
       for(auto &part : file_path) {
         if(part == "include") {
diff --git a/src/source_base.cpp b/src/source_base.cpp
index 367fc1f..bab0ef8 100644
--- a/src/source_base.cpp
+++ b/src/source_base.cpp
@@ -160,7 +160,7 @@ Source::BaseView::BaseView(const boost::filesystem::path &file_path, const Glib:
        language_id == "c-sharp" || language_id == "html" || language_id == "cuda" ||
        language_id == "php" || language_id == "rust" || language_id == "swift" ||
        language_id == "go" || language_id == "scala" || language_id == "opencl" ||
-       language_id == "json" || language_id == "css")
+       language_id == "json" || language_id == "css" || language_id == "glsl")
       is_bracket_language = true;
   }