diff --git a/src/http/handler.zig b/src/http/handler.zig
index 479b6d3..1507829 100644
--- a/src/http/handler.zig
+++ b/src/http/handler.zig
@@ -425,7 +425,7 @@ test "handler: format line 1" {
     try handleWeather(&harness.opts, ht.req, ht.res, client_ip);
 
     try ht.expectStatus(200);
-    try ht.expectBody("☀️ +20°C");
+    try ht.expectBody("☀️ +20°C\n");
 }
 
 test "handler: format line 2" {
@@ -446,7 +446,7 @@ test "handler: format line 2" {
     try handleWeather(&harness.opts, ht.req, ht.res, client_ip);
 
     try ht.expectStatus(200);
-    try ht.expectBody("☀️  🌡️+20°C 🌬️↓5km/h");
+    try ht.expectBody("☀️  🌡️+20°C 🌬️↓5km/h\n");
 }
 
 test "handler: format line 3" {
@@ -467,5 +467,5 @@ test "handler: format line 3" {
     try handleWeather(&harness.opts, ht.req, ht.res, client_ip);
 
     try ht.expectStatus(200);
-    try ht.expectBody("Union City, California, United States: ☀️ +20°C");
+    try ht.expectBody("Union City, California, United States: ☀️ +20°C\n");
 }
diff --git a/src/render/Line.zig b/src/render/Line.zig
index 65bb6fc..dde35a1 100644
--- a/src/render/Line.zig
+++ b/src/render/Line.zig
@@ -20,7 +20,7 @@ pub fn render(writer: *std.Io.Writer, data: types.WeatherData, format: Format, u
 
     switch (format) {
         .@"1" => {
-            try writer.print("{s} {s}{d:.0}{s}", .{
+            try writer.print("{s} {s}{d:.0}{s}\n", .{
                 emoji.getWeatherEmoji(data.current.weather_code),
                 sign,
                 abs_temp,
@@ -28,7 +28,7 @@ pub fn render(writer: *std.Io.Writer, data: types.WeatherData, format: Format, u
             });
         },
         .@"2" => {
-            try writer.print("{s}  🌡️{s}{d:.0}{s} 🌬️{s}{d:.0}{s}", .{
+            try writer.print("{s}  🌡️{s}{d:.0}{s} 🌬️{s}{d:.0}{s}\n", .{
                 emoji.getWeatherEmoji(data.current.weather_code),
                 sign,
                 abs_temp,
@@ -39,7 +39,7 @@ pub fn render(writer: *std.Io.Writer, data: types.WeatherData, format: Format, u
             });
         },
         .@"3" => {
-            try writer.print("{s}: {s} {s}{d:.0}{s}", .{
+            try writer.print("{s}: {s} {s}{d:.0}{s}\n", .{
                 data.display_name orelse data.location,
                 emoji.getWeatherEmoji(data.current.weather_code),
                 sign,
@@ -48,7 +48,7 @@ pub fn render(writer: *std.Io.Writer, data: types.WeatherData, format: Format, u
             });
         },
         .@"4" => {
-            try writer.print("{s}: {s}  🌡️{s}{d:.0}{s} 🌬️{s}{d:.0}{s}", .{
+            try writer.print("{s}: {s}  🌡️{s}{d:.0}{s} 🌬️{s}{d:.0}{s}\n", .{
                 data.display_name orelse data.location,
                 emoji.getWeatherEmoji(data.current.weather_code),
                 sign,
@@ -89,7 +89,7 @@ test "format 1" {
 
     const output = output_buf[0..writer.end];
 
-    try std.testing.expectEqualStrings("☀️ +15°C", output);
+    try std.testing.expectEqualStrings("☀️ +15°C\n", output);
 }
 
 test "format 2 with imperial units" {
@@ -100,7 +100,7 @@ test "format 2 with imperial units" {
 
     const output = output_buf[0..writer.end];
 
-    try std.testing.expectEqualStrings("☀️  🌡️+59°F 🌬️↓6mph", output);
+    try std.testing.expectEqualStrings("☀️  🌡️+59°F 🌬️↓6mph\n", output);
 }
 
 test "format 3 with metric units" {
@@ -111,7 +111,7 @@ test "format 3 with metric units" {
 
     const output = output_buf[0..writer.end];
 
-    try std.testing.expectEqualStrings("London: ☀️ +15°C", output);
+    try std.testing.expectEqualStrings("London: ☀️ +15°C\n", output);
 }
 
 test "format 3 with imperial units (display name)" {
@@ -124,7 +124,7 @@ test "format 3 with imperial units (display name)" {
 
     const output = output_buf[0..writer.end];
 
-    try std.testing.expectEqualStrings("Hello, world: ☀️ +59°F", output);
+    try std.testing.expectEqualStrings("Hello, world: ☀️ +59°F\n", output);
 }
 
 test "format 4 with metric units" {
@@ -135,7 +135,7 @@ test "format 4 with metric units" {
 
     const output = output_buf[0..writer.end];
 
-    try std.testing.expectEqualStrings("London: ☀️  🌡️+15°C 🌬️↓10km/h", output);
+    try std.testing.expectEqualStrings("London: ☀️  🌡️+15°C 🌬️↓10km/h\n", output);
 }
 
 test "format 4 with imperial units" {
@@ -146,5 +146,5 @@ test "format 4 with imperial units" {
 
     const output = output_buf[0..writer.end];
 
-    try std.testing.expectEqualStrings("London: ☀️  🌡️+59°F 🌬️↓6mph", output);
+    try std.testing.expectEqualStrings("London: ☀️  🌡️+59°F 🌬️↓6mph\n", output);
 }