diff --git a/__tests__/fixtures/tailwind-output-important.css b/__tests__/fixtures/tailwind-output-important.css
index 1f4628d3a..d684b24de 100644
--- a/__tests__/fixtures/tailwind-output-important.css
+++ b/__tests__/fixtures/tailwind-output-important.css
@@ -6256,6 +6256,10 @@ samp {
   font-size: 3rem !important;
 }
 
+.text-6xl {
+  font-size: 4rem !important;
+}
+
 .italic {
   font-style: italic !important;
 }
@@ -12261,6 +12265,10 @@ samp {
     font-size: 3rem !important;
   }
 
+  .sm\:text-6xl {
+    font-size: 4rem !important;
+  }
+
   .sm\:italic {
     font-style: italic !important;
   }
@@ -18267,6 +18275,10 @@ samp {
     font-size: 3rem !important;
   }
 
+  .md\:text-6xl {
+    font-size: 4rem !important;
+  }
+
   .md\:italic {
     font-style: italic !important;
   }
@@ -24273,6 +24285,10 @@ samp {
     font-size: 3rem !important;
   }
 
+  .lg\:text-6xl {
+    font-size: 4rem !important;
+  }
+
   .lg\:italic {
     font-style: italic !important;
   }
@@ -30279,6 +30295,10 @@ samp {
     font-size: 3rem !important;
   }
 
+  .xl\:text-6xl {
+    font-size: 4rem !important;
+  }
+
   .xl\:italic {
     font-style: italic !important;
   }
diff --git a/__tests__/fixtures/tailwind-output.css b/__tests__/fixtures/tailwind-output.css
index 3f554e0a7..1bf1e39d5 100644
--- a/__tests__/fixtures/tailwind-output.css
+++ b/__tests__/fixtures/tailwind-output.css
@@ -6256,6 +6256,10 @@ samp {
   font-size: 3rem;
 }
 
+.text-6xl {
+  font-size: 4rem;
+}
+
 .italic {
   font-style: italic;
 }
@@ -12261,6 +12265,10 @@ samp {
     font-size: 3rem;
   }
 
+  .sm\:text-6xl {
+    font-size: 4rem;
+  }
+
   .sm\:italic {
     font-style: italic;
   }
@@ -18267,6 +18275,10 @@ samp {
     font-size: 3rem;
   }
 
+  .md\:text-6xl {
+    font-size: 4rem;
+  }
+
   .md\:italic {
     font-style: italic;
   }
@@ -24273,6 +24285,10 @@ samp {
     font-size: 3rem;
   }
 
+  .lg\:text-6xl {
+    font-size: 4rem;
+  }
+
   .lg\:italic {
     font-style: italic;
   }
@@ -30279,6 +30295,10 @@ samp {
     font-size: 3rem;
   }
 
+  .xl\:text-6xl {
+    font-size: 4rem;
+  }
+
   .xl\:italic {
     font-style: italic;
   }
diff --git a/defaultTheme.js b/defaultTheme.js
index 34a240c41..17e1c6e6a 100644
--- a/defaultTheme.js
+++ b/defaultTheme.js
@@ -148,6 +148,7 @@ module.exports = function() {
       '3xl': '1.875rem',
       '4xl': '2.25rem',
       '5xl': '3rem',
+      '6xl': '4rem',
     },
     fontWeight: {
       hairline: 100,