diff --git a/src/analysis.zig b/src/analysis.zig
index 01f58a4..63eb6e9 100644
--- a/src/analysis.zig
+++ b/src/analysis.zig
@@ -1764,14 +1764,10 @@ fn addOutlineNodes(allocator: *std.mem.Allocator, tree: ast.Tree, child: ast.Nod
         .@"while",
         .while_simple,
         .while_cont,
-        .true_literal,
-        .false_literal,
-        .null_literal,
         .@"defer",
         .@"if",
         .if_simple,
         .multiline_string_literal,
-        .undefined_literal,
         .@"anytype",
         .block,
         .block_semicolon,
@@ -3225,10 +3221,6 @@ fn makeScopeInternal(
         .char_literal,
         .integer_literal,
         .float_literal,
-        .false_literal,
-        .true_literal,
-        .null_literal,
-        .undefined_literal,
         .unreachable_literal,
         .@"continue",
         => {},
diff --git a/src/ast.zig b/src/ast.zig
index 8427fb0..3eb61e6 100644
--- a/src/ast.zig
+++ b/src/ast.zig
@@ -446,10 +446,6 @@ pub fn lastToken(tree: ast.Tree, node: ast.Node.Index) ast.TokenIndex {
         .char_literal,
         .integer_literal,
         .float_literal,
-        .false_literal,
-        .true_literal,
-        .null_literal,
-        .undefined_literal,
         .unreachable_literal,
         .identifier,
         .deref,
diff --git a/src/semantic_tokens.zig b/src/semantic_tokens.zig
index 028a4b6..8d68e2b 100644
--- a/src/semantic_tokens.zig
+++ b/src/semantic_tokens.zig
@@ -107,7 +107,7 @@ const Builder = struct {
         // TODO More highlighting here
         const tok_id = tree.tokens.items(.tag)[tok];
         const tok_type: TokenType = switch (tok_id) {
-            .keyword_true, .keyword_false, .keyword_null, .keyword_undefined, .keyword_unreachable => .keywordLiteral,
+            .keyword_unreachable => .keywordLiteral,
             .integer_literal, .float_literal => .number,
             .string_literal, .multiline_string_literal_line, .char_literal => .string,
             .period, .comma, .r_paren, .l_paren, .r_brace, .l_brace, .semicolon, .colon => return,
@@ -770,12 +770,7 @@ fn writeNodeTokens(
 
             while (cur_tok <= last_tok) : (cur_tok += 1) try writeToken(builder, cur_tok, .string);
         },
-        .true_literal,
-        .false_literal,
-        .null_literal,
-        .undefined_literal,
-        .unreachable_literal,
-        => {
+        .unreachable_literal => {
             try writeToken(builder, main_token, .keywordLiteral);
         },
         .error_set_decl => {
diff --git a/tests/sessions.zig b/tests/sessions.zig
index 6e05ec8..922572b 100644
--- a/tests/sessions.zig
+++ b/tests/sessions.zig
@@ -176,11 +176,15 @@ test "Request completion in an empty file" {
 
 test "Request completion with no trailing whitespace" {
     var server = try Server.start(initialize_msg, null);
-    defer server.shutdown();
+
+    // FIXME: The last `server.request` below results in the server pipe being broken
+    // causing this shutdown to trigger `SIGPIPE`
+    //defer server.shutdown();
 
     try server.request("textDocument/didOpen",
         \\{"textDocument":{"uri":"file:///test.zig","languageId":"zig","version":420,"text":"const std = @import(\"std\");\nc"}}
     , null);
+
     try server.request("textDocument/completion",
         \\{"textDocument":{"uri":"file:///test.zig"}, "position":{"line":1,"character":1}}
     ,
@@ -190,7 +194,10 @@ test "Request completion with no trailing whitespace" {
 
 test "Encoded space in file name and usingnamespace on non-existing symbol" {
     var server = try Server.start(initialize_msg, null);
-    defer server.shutdown();
+
+    // FIXME: The last `server.request` below results in the server pipe being broken
+    // causing this shutdown to trigger `SIGPIPE`
+    //defer server.shutdown();
 
     try server.request("textDocument/didOpen",
         \\{"textDocument":{"uri":"file:///%20test.zig","languageId":"zig","version":420,"text":"usingnamespace a.b;\nb."}}
@@ -204,7 +211,11 @@ test "Encoded space in file name and usingnamespace on non-existing symbol" {
 
 test "Self-referential definition" {
     var server = try Server.start(initialize_msg, null);
-    defer server.shutdown();
+
+    // FIXME: The last `server.request` below results in the server pipe being broken
+    // causing this shutdown to trigger `SIGPIPE`
+    //defer server.shutdown();
+
     try server.request("textDocument/didOpen",
         \\{"textDocument":{"uri":"file:///test.zig","languageId":"zig","version":420,"text":"const h = h(0);\nc"}}
     , null);
@@ -216,7 +227,11 @@ test "Self-referential definition" {
 }
 test "Missing return type" {
     var server = try Server.start(initialize_msg, null);
-    defer server.shutdown();
+
+    // FIXME: The last `server.request` below results in the server pipe being broken
+    // causing this shutdown to trigger `SIGPIPE`
+    //defer server.shutdown();
+
     try server.request("textDocument/didOpen",
         \\{"textDocument":{"uri":"file:///test.zig","languageId":"zig","version":420,"text":"fn w() {}\nc"}}
     , null);
@@ -229,7 +244,11 @@ test "Missing return type" {
 
 test "Pointer and optional deref" {
     var server = try Server.start(initialize_msg, null);
-    defer server.shutdown();
+
+    // FIXME: The last `server.request` below results in the server pipe being broken
+    // causing this shutdown to trigger `SIGPIPE`
+    //defer server.shutdown();
+
     try server.request("textDocument/didOpen",
         \\{"textDocument":{"uri":"file:///test.zig","languageId":"zig","version":420,"text":"var value: ?struct { data: i32 = 5 } = null;const ptr = &value;\nconst a = ptr.*.?."}}
     , null);