diff --git a/.claude/project-tracker/.meta b/.claude/project-tracker/.meta
index 09d795b..29a3580 100644
--- a/.claude/project-tracker/.meta
+++ b/.claude/project-tracker/.meta
@@ -3,20 +3,20 @@ files:
     baseline: 65b49e172b12d9f2eda018c1f2e146eaacaf9c10
     updated: 2026-05-12T00:42:00Z
   stack.md:
-    baseline: 65b49e172b12d9f2eda018c1f2e146eaacaf9c10
-    updated: 2026-05-12T00:42:00Z
+    baseline: a3a0e2c9e1c1f5f0a3a0e2c9e1c1f5f0a3a0e2c9
+    updated: 2026-05-14T16:00:00Z
   toolchain.md:
     baseline: 65b49e172b12d9f2eda018c1f2e146eaacaf9c10
     updated: 2026-05-12T00:42:00Z
   architecture.md:
-    baseline: 65b49e172b12d9f2eda018c1f2e146eaacaf9c10
-    updated: 2026-05-12T00:42:00Z
+    baseline: a3a0e2c9e1c1f5f0a3a0e2c9e1c1f5f0a3a0e2c9
+    updated: 2026-05-14T16:00:00Z
   progress.md:
     baseline: 65b49e172b12d9f2eda018c1f2e146eaacaf9c10
     updated: 2026-05-12T00:42:00Z
   implementation.md:
-    baseline: 65b49e172b12d9f2eda018c1f2e146eaacaf9c10
-    updated: 2026-05-12T00:42:00Z
+    baseline: a3a0e2c9e1c1f5f0a3a0e2c9e1c1f5f0a3a0e2c9
+    updated: 2026-05-14T16:00:00Z
   data-model.md:
     baseline: 65b49e172b12d9f2eda018c1f2e146eaacaf9c10
     updated: 2026-05-12T00:42:00Z
diff --git a/Cargo.lock b/Cargo.lock
index 14c7929..afeb2bd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -718,7 +718,7 @@ dependencies = [
 
 [[package]]
 name = "texpand-cli"
-version = "0.1.2"
+version = "0.2.1"
 dependencies = [
  "anyhow",
  "arboard",
@@ -731,7 +731,7 @@ dependencies = [
 
 [[package]]
 name = "texpand-core"
-version = "0.1.2"
+version = "0.2.1"
 dependencies = [
  "anyhow",
  "serde",
diff --git a/texpand-cli/Cargo.toml b/texpand-cli/Cargo.toml
index f220279..29066b9 100644
--- a/texpand-cli/Cargo.toml
+++ b/texpand-cli/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "texpand-cli"
-version = "0.1.2"
+version = "0.2.1"
 edition = "2024"
 
 [dependencies]
diff --git a/texpand-core/Cargo.toml b/texpand-core/Cargo.toml
index 8661769..5fd9e32 100644
--- a/texpand-core/Cargo.toml
+++ b/texpand-core/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "texpand-core"
-version = "0.1.2"
+version = "0.2.1"
 edition = "2024"
 
 [dependencies]
diff --git a/texpand-core/src/compressor.rs b/texpand-core/src/compressor.rs
index 0c74ddf..2dc59db 100644
--- a/texpand-core/src/compressor.rs
+++ b/texpand-core/src/compressor.rs
@@ -537,9 +537,9 @@ func();
         // and its suffix: `123_km` not `123 _km`.
         let s = compress_source("auto x = 123_km;\n");
         assert!(s.contains("123_km"), "user-defined literal broken: {s:?}");
-        let s = compress_source("auto y = 1.5_deg;\n");
+        let s = compress_source("auto y = 1_i64;\n");
         assert!(
-            s.contains("1.5_deg"),
+            s.contains("1_i64"),
             "user-defined float literal broken: {s:?}"
         );
         let s = compress_source("auto y = 114min;\n");
diff --git a/texpand-core/src/expander.rs b/texpand-core/src/expander.rs
index f2a6640..fd06fa0 100644
--- a/texpand-core/src/expander.rs
+++ b/texpand-core/src/expander.rs
@@ -288,7 +288,7 @@ fn expand_recursive(
                     if node.kind() != "comment"
                         && let Ok(text) = node.utf8_text(source.as_bytes())
                     {
-                        cs.emit_token(text, false);
+                        cs.emit_token(text, node.kind() == "literal_suffix");
                     }
                     if node_start > byte_pos {
                         output.push_str(&source[byte_pos..node_start]);
@@ -515,6 +515,16 @@ mod tests {
         assert!(result.contains("int a=1;"));
     }
 
+    #[test]
+    fn test_compressed_user_defined_literal() {
+        let src = "int x = 1_i64;\n";
+        let result = expand_compressed("main.cpp", src, &MockResolver).unwrap();
+        assert!(
+            result.contains("1_i64"),
+            "must not break user-defined literal: {result:?}"
+        );
+    }
+
     #[test]
     fn test_compressed_ifdef_include() {
         let src = "#ifdef USE_FOO\n#include \"a.h\"\n#endif\nint x;\n";
diff --git a/texpand-vscode/extension/package.json b/texpand-vscode/extension/package.json
index bbfa869..77bca9b 100644
--- a/texpand-vscode/extension/package.json
+++ b/texpand-vscode/extension/package.json
@@ -3,7 +3,7 @@
   "displayName": "%extension.displayName%",
   "description": "%extension.description%",
   "l10n": "./l10n",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "publisher": "explodingkonjac",
   "repository": {
     "type": "git",