diff --git a/helix-core/src/diagnostic.rs b/helix-core/src/diagnostic.rs
index 96ed6746..c1a3b4c1 100644
--- a/helix-core/src/diagnostic.rs
+++ b/helix-core/src/diagnostic.rs
@@ -1,7 +1,15 @@
 use crate::Range;
 
+pub enum Severity {
+    Error,
+    Warning,
+    Info,
+    Hint,
+}
+
 pub struct Diagnostic {
     pub range: (usize, usize),
     pub line: usize,
     pub message: String,
+    pub severity: Option<Severity>,
 }
diff --git a/helix-core/src/lib.rs b/helix-core/src/lib.rs
index 89b82c4e..81a35f10 100644
--- a/helix-core/src/lib.rs
+++ b/helix-core/src/lib.rs
@@ -1,6 +1,6 @@
 #![allow(unused)]
 pub mod comment;
-mod diagnostic;
+pub mod diagnostic;
 pub mod graphemes;
 mod history;
 pub mod indent;
diff --git a/helix-term/src/application.rs b/helix-term/src/application.rs
index 583d8fc8..24b5317b 100644
--- a/helix-term/src/application.rs
+++ b/helix-term/src/application.rs
@@ -139,15 +139,25 @@ impl Application {
                                 .diagnostics
                                 .into_iter()
                                 .map(|diagnostic| {
-                                    use helix_lsp::util::lsp_pos_to_pos;
+                                    use helix_core::diagnostic::Severity::*;
+                                    use helix_core::{diagnostic::Severity, Diagnostic};
+                                    use helix_lsp::{lsp, util::lsp_pos_to_pos};
+                                    use lsp::DiagnosticSeverity;
                                     let start = lsp_pos_to_pos(doc, diagnostic.range.start);
                                     let end = lsp_pos_to_pos(doc, diagnostic.range.end);
 
-                                    helix_core::Diagnostic {
+                                    Diagnostic {
                                         range: (start, end),
                                         line: diagnostic.range.start.line as usize,
                                         message: diagnostic.message,
-                                        // severity
+                                        severity: diagnostic.severity.map(
+                                            |severity| match severity {
+                                                DiagnosticSeverity::Error => Error,
+                                                DiagnosticSeverity::Warning => Warning,
+                                                DiagnosticSeverity::Information => Info,
+                                                DiagnosticSeverity::Hint => Hint,
+                                            },
+                                        ),
                                         // code
                                         // source
                                     }
diff --git a/helix-term/src/ui/editor.rs b/helix-term/src/ui/editor.rs
index 7a5e4aa5..ae48950f 100644
--- a/helix-term/src/ui/editor.rs
+++ b/helix-term/src/ui/editor.rs
@@ -283,10 +283,26 @@ impl EditorView {
 
         let style: Style = theme.get("ui.linenr");
         let warning: Style = theme.get("warning");
+        let error: Style = theme.get("error");
+        let info: Style = theme.get("info");
+        let hint: Style = theme.get("hint");
+
         let last_line = view.last_line();
         for (i, line) in (view.first_line..last_line).enumerate() {
-            if view.doc.diagnostics.iter().any(|d| d.line == line) {
-                surface.set_stringn(viewport.x - OFFSET, viewport.y + i as u16, "●", 1, warning);
+            use helix_core::diagnostic::Severity;
+            if let Some(diagnostic) = view.doc.diagnostics.iter().find(|d| d.line == line) {
+                surface.set_stringn(
+                    viewport.x - OFFSET,
+                    viewport.y + i as u16,
+                    "●",
+                    1,
+                    match diagnostic.severity {
+                        Some(Severity::Error) => error,
+                        Some(Severity::Warning) | None => warning,
+                        Some(Severity::Info) => info,
+                        Some(Severity::Hint) => hint,
+                    },
+                );
             }
 
             surface.set_stringn(
diff --git a/helix-view/src/theme.rs b/helix-view/src/theme.rs
index ad15f6f2..0efd329c 100644
--- a/helix-view/src/theme.rs
+++ b/helix-view/src/theme.rs
@@ -160,6 +160,9 @@ impl Default for Theme {
             "ui.popup" => Style::default().bg(Color::Rgb(40, 23, 51)), // revolver
 
             "warning" => Style::default().fg(Color::Rgb(255, 205, 28)),
+            "error" => Style::default().fg(Color::Rgb(244, 120, 104)),
+            "info" => Style::default().fg(Color::Rgb(111, 68, 240)),
+            "hint" => Style::default().fg(Color::Rgb(204, 204, 204)),
         };
 
         let scopes = mapping.keys().map(ToString::to_string).collect();