diff --git a/src/librustdoc/html/render/write_shared.rs b/src/librustdoc/html/render/write_shared.rs
index 840566731d78d..94a902a2d0522 100644
--- a/src/librustdoc/html/render/write_shared.rs
+++ b/src/librustdoc/html/render/write_shared.rs
@@ -25,10 +25,16 @@ static FILES_UNVERSIONED: Lazy<FxHashMap<&str, &[u8]>> = Lazy::new(|| {
         "FiraSans-Regular.woff" => static_files::fira_sans::REGULAR,
         "FiraSans-Medium.woff" => static_files::fira_sans::MEDIUM,
         "FiraSans-LICENSE.txt" => static_files::fira_sans::LICENSE,
+        "SourceSerif4-Regular.ttf.woff2" => static_files::source_serif_4::REGULAR2,
+        "SourceSerif4-Bold.ttf.woff2" => static_files::source_serif_4::BOLD2,
+        "SourceSerif4-It.ttf.woff2" => static_files::source_serif_4::ITALIC2,
         "SourceSerif4-Regular.ttf.woff" => static_files::source_serif_4::REGULAR,
         "SourceSerif4-Bold.ttf.woff" => static_files::source_serif_4::BOLD,
         "SourceSerif4-It.ttf.woff" => static_files::source_serif_4::ITALIC,
         "SourceSerif4-LICENSE.md" => static_files::source_serif_4::LICENSE,
+        "SourceCodePro-Regular.ttf.woff2" => static_files::source_code_pro::REGULAR2,
+        "SourceCodePro-Semibold.ttf.woff2" => static_files::source_code_pro::SEMIBOLD2,
+        "SourceCodePro-It.ttf.woff2" => static_files::source_code_pro::ITALIC2,
         "SourceCodePro-Regular.ttf.woff" => static_files::source_code_pro::REGULAR,
         "SourceCodePro-Semibold.ttf.woff" => static_files::source_code_pro::SEMIBOLD,
         "SourceCodePro-It.ttf.woff" => static_files::source_code_pro::ITALIC,
diff --git a/src/librustdoc/html/static/COPYRIGHT.txt b/src/librustdoc/html/static/COPYRIGHT.txt
index 16d79032fcc63..c2629a83f7092 100644
--- a/src/librustdoc/html/static/COPYRIGHT.txt
+++ b/src/librustdoc/html/static/COPYRIGHT.txt
@@ -2,7 +2,8 @@ These documentation pages include resources by third parties. This copyright
 file applies only to those resources. The following third party resources are
 included, and carry their own copyright notices and license terms:
 
-* Fira Sans (FiraSans-Regular.woff, FiraSans-Medium.woff):
+* Fira Sans (FiraSans-Regular.woff2, FiraSans-Medium.woff2,
+    FiraSans-Regular.woff, FiraSans-Medium.woff):
 
     Copyright (c) 2014, Mozilla Foundation https://mozilla.org/
     with Reserved Font Name Fira Sans.
@@ -23,8 +24,10 @@ included, and carry their own copyright notices and license terms:
     Copyright (c) Nicolas Gallagher and Jonathan Neal.
     Licensed under the MIT license (see LICENSE-MIT.txt).
 
-* Source Code Pro (SourceCodePro-Regular.ttf.woff,
-    SourceCodePro-Semibold.ttf.woff, SourceCodePro-It.ttf.woff):
+* Source Code Pro (SourceCodePro-Regular.ttf.woff2,
+    SourceCodePro-Semibold.ttf.woff2, SourceCodePro-It.ttf.woff2,
+    SourceCodePro-Regular.ttf.woff, SourceCodePro-Semibold.ttf.woff,
+    SourceCodePro-It.ttf.woff):
 
     Copyright 2010, 2012 Adobe Systems Incorporated (http://www.adobe.com/),
     with Reserved Font Name 'Source'. All Rights Reserved. Source is a trademark
@@ -33,8 +36,9 @@ included, and carry their own copyright notices and license terms:
     Licensed under the SIL Open Font License, Version 1.1.
     See SourceCodePro-LICENSE.txt.
 
-* Source Serif 4 (SourceSerif4-Regular.ttf.woff, SourceSerif4-Bold.ttf.woff,
-    SourceSerif4-It.ttf.woff):
+* Source Serif 4 (SourceSerif4-Regular.ttf.woff2, SourceSerif4-Bold.ttf.woff2,
+    SourceSerif4-It.ttf.woff2, SourceSerif4-Regular.ttf.woff,
+    SourceSerif4-Bold.ttf.woff, SourceSerif4-It.ttf.woff):
 
     Copyright 2014-2021 Adobe (http://www.adobe.com/), with Reserved Font Name
     'Source'. All Rights Reserved. Source is a trademark of Adobe in the United
diff --git a/src/librustdoc/html/static/SourceCodePro-It.ttf.woff2 b/src/librustdoc/html/static/SourceCodePro-It.ttf.woff2
new file mode 100644
index 0000000000000..462c34efcd9d6
Binary files /dev/null and b/src/librustdoc/html/static/SourceCodePro-It.ttf.woff2 differ
diff --git a/src/librustdoc/html/static/SourceCodePro-Regular.ttf.woff2 b/src/librustdoc/html/static/SourceCodePro-Regular.ttf.woff2
new file mode 100644
index 0000000000000..10b558e0b69a7
Binary files /dev/null and b/src/librustdoc/html/static/SourceCodePro-Regular.ttf.woff2 differ
diff --git a/src/librustdoc/html/static/SourceCodePro-Semibold.ttf.woff2 b/src/librustdoc/html/static/SourceCodePro-Semibold.ttf.woff2
new file mode 100644
index 0000000000000..5ec64eef0ec94
Binary files /dev/null and b/src/librustdoc/html/static/SourceCodePro-Semibold.ttf.woff2 differ
diff --git a/src/librustdoc/html/static/SourceSerif4-Bold.ttf.woff2 b/src/librustdoc/html/static/SourceSerif4-Bold.ttf.woff2
new file mode 100644
index 0000000000000..db57d21455c94
Binary files /dev/null and b/src/librustdoc/html/static/SourceSerif4-Bold.ttf.woff2 differ
diff --git a/src/librustdoc/html/static/SourceSerif4-It.ttf.woff2 b/src/librustdoc/html/static/SourceSerif4-It.ttf.woff2
new file mode 100644
index 0000000000000..1cbc021a3aa22
Binary files /dev/null and b/src/librustdoc/html/static/SourceSerif4-It.ttf.woff2 differ
diff --git a/src/librustdoc/html/static/SourceSerif4-Regular.ttf.woff2 b/src/librustdoc/html/static/SourceSerif4-Regular.ttf.woff2
new file mode 100644
index 0000000000000..2db73fe2b49e8
Binary files /dev/null and b/src/librustdoc/html/static/SourceSerif4-Regular.ttf.woff2 differ
diff --git a/src/librustdoc/html/static/rustdoc.css b/src/librustdoc/html/static/rustdoc.css
index 89f5d59224164..9e1fcb929c54d 100644
--- a/src/librustdoc/html/static/rustdoc.css
+++ b/src/librustdoc/html/static/rustdoc.css
@@ -23,21 +23,27 @@
 	font-family: 'Source Serif 4';
 	font-style: normal;
 	font-weight: 400;
-	src: local('Source Serif 4'), url("SourceSerif4-Regular.ttf.woff") format('woff');
+	src: local('Source Serif 4'),
+		url("SourceSerif4-Regular.ttf.woff2") format("woff2"),
+		url("SourceSerif4-Regular.ttf.woff") format("woff");
 	font-display: swap;
 }
 @font-face {
 	font-family: 'Source Serif 4';
 	font-style: italic;
 	font-weight: 400;
-	src: local('Source Serif 4 Italic'), url("SourceSerif4-It.ttf.woff") format('woff');
+	src: local('Source Serif 4 Italic'),
+		url("SourceSerif4-It.ttf.woff2") format("woff2"),
+		url("SourceSerif4-It.ttf.woff") format("woff");
 	font-display: swap;
 }
 @font-face {
 	font-family: 'Source Serif 4';
 	font-style: normal;
 	font-weight: 700;
-	src: local('Source Serif 4 Bold'), url("SourceSerif4-Bold.ttf.woff") format('woff');
+	src: local('Source Serif 4 Bold'),
+		url("SourceSerif4-Bold.ttf.woff2") format("woff2"),
+		url("SourceSerif4-Bold.ttf.woff") format("woff");
 	font-display: swap;
 }
 
@@ -48,21 +54,24 @@
 	font-weight: 400;
 	/* Avoid using locally installed font because bad versions are in circulation:
 	 * see https://github.com/rust-lang/rust/issues/24355 */
-	src: url("SourceCodePro-Regular.ttf.woff") format('woff');
+	src: url("SourceCodePro-Regular.ttf.woff2") format("woff2"),
+		url("SourceCodePro-Regular.ttf.woff") format("woff");
 	font-display: swap;
 }
 @font-face {
 	font-family: 'Source Code Pro';
 	font-style: italic;
 	font-weight: 400;
-	src: url("SourceCodePro-It.ttf.woff") format('woff');
+	src: url("SourceCodePro-It.ttf.woff2") format("woff2"),
+		url("SourceCodePro-It.ttf.woff") format("woff");
 	font-display: swap;
 }
 @font-face {
 	font-family: 'Source Code Pro';
 	font-style: normal;
 	font-weight: 600;
-	src: url("SourceCodePro-Semibold.ttf.woff") format('woff');
+	src: url("SourceCodePro-Semibold.ttf.woff2") format("woff2"),
+		url("SourceCodePro-Semibold.ttf.woff") format("woff");
 	font-display: swap;
 }
 
diff --git a/src/librustdoc/html/static_files.rs b/src/librustdoc/html/static_files.rs
index 00e13d4ec1aa8..4443c74834d04 100644
--- a/src/librustdoc/html/static_files.rs
+++ b/src/librustdoc/html/static_files.rs
@@ -102,12 +102,24 @@ crate mod source_serif_4 {
     /// The file `SourceSerif4-Regular.ttf.woff`, the Regular variant of the Source Serif 4 font.
     crate static REGULAR: &[u8] = include_bytes!("static/SourceSerif4-Regular.ttf.woff");
 
+    /// The file `SourceSerif4-Regular.ttf.woff2`, the Regular variant of the Source Serif 4 font in
+    /// woff2.
+    crate static REGULAR2: &[u8] = include_bytes!("static/SourceSerif4-Regular.ttf.woff2");
+
     /// The file `SourceSerif4-Bold.ttf.woff`, the Bold variant of the Source Serif 4 font.
     crate static BOLD: &[u8] = include_bytes!("static/SourceSerif4-Bold.ttf.woff");
 
+    /// The file `SourceSerif4-Bold.ttf.woff2`, the Bold variant of the Source Serif 4 font in
+    /// woff2.
+    crate static BOLD2: &[u8] = include_bytes!("static/SourceSerif4-Bold.ttf.woff2");
+
     /// The file `SourceSerif4-It.ttf.woff`, the Italic variant of the Source Serif 4 font.
     crate static ITALIC: &[u8] = include_bytes!("static/SourceSerif4-It.ttf.woff");
 
+    /// The file `SourceSerif4-It.ttf.woff2`, the Italic variant of the Source Serif 4 font in
+    /// woff2.
+    crate static ITALIC2: &[u8] = include_bytes!("static/SourceSerif4-It.ttf.woff2");
+
     /// The file `SourceSerif4-LICENSE.txt`, the license text for the Source Serif 4 font.
     crate static LICENSE: &[u8] = include_bytes!("static/SourceSerif4-LICENSE.md");
 }
@@ -117,13 +129,25 @@ crate mod source_code_pro {
     /// The file `SourceCodePro-Regular.ttf.woff`, the Regular variant of the Source Code Pro font.
     crate static REGULAR: &[u8] = include_bytes!("static/SourceCodePro-Regular.ttf.woff");
 
+    /// The file `SourceCodePro-Regular.ttf.woff2`, the Regular variant of the Source Code Pro font
+    /// in woff2.
+    crate static REGULAR2: &[u8] = include_bytes!("static/SourceCodePro-Regular.ttf.woff2");
+
     /// The file `SourceCodePro-Semibold.ttf.woff`, the Semibold variant of the Source Code Pro
     /// font.
     crate static SEMIBOLD: &[u8] = include_bytes!("static/SourceCodePro-Semibold.ttf.woff");
 
+    /// The file `SourceCodePro-Semibold.ttf.woff2`, the Semibold variant of the Source Code Pro
+    /// font in woff2.
+    crate static SEMIBOLD2: &[u8] = include_bytes!("static/SourceCodePro-Semibold.ttf.woff2");
+
     /// The file `SourceCodePro-It.ttf.woff`, the Italic variant of the Source Code Pro font.
     crate static ITALIC: &[u8] = include_bytes!("static/SourceCodePro-It.ttf.woff");
 
+    /// The file `SourceCodePro-It.ttf.woff2`, the Italic variant of the Source Code Pro font in
+    /// woff2.
+    crate static ITALIC2: &[u8] = include_bytes!("static/SourceCodePro-It.ttf.woff2");
+
     /// The file `SourceCodePro-LICENSE.txt`, the license text of the Source Code Pro font.
     crate static LICENSE: &[u8] = include_bytes!("static/SourceCodePro-LICENSE.txt");
 }