diff --git a/utils/build.ps1 b/utils/build.ps1
index f3de13e0056df..dab148235b103 100644
--- a/utils/build.ps1
+++ b/utils/build.ps1
@@ -720,6 +720,7 @@ enum Project {
   SourceKitLSP
   SymbolKit
   DocC
+  brotli
 
   LLVM
   Runtime
@@ -2260,6 +2261,21 @@ function Build-Sanitizers([Hashtable] $Platform) {
     }
 }
 
+function Build-Brotli([Hashtable] $Platform) {
+  Build-CMakeProject `
+    -Src $SourceCache\brotli `
+    -Bin "$(Get-ProjectBinaryCache $Platform brotli)" `
+    -InstallTo "$BinaryCache\$($Platform.Triple)\usr" `
+    -Platform $Platform `
+    -UseMSVCCompilers C `
+    -Defines @{
+      BUILD_SHARED_LIBS = "NO";
+      CMAKE_POSITION_INDEPENDENT_CODE = "YES";
+      CMAKE_SYSTEM_NAME = $Platform.OS.ToString();
+    }
+}
+
+
 function Build-ZLib([Hashtable] $Platform) {
   Build-CMakeProject `
     -Src $SourceCache\zlib `
@@ -2344,7 +2360,7 @@ function Build-CURL([Hashtable] $Platform) {
       CURL_CA_BUNDLE = "none";
       CURL_CA_FALLBACK = "NO";
       CURL_CA_PATH = "none";
-      CURL_BROTLI = "NO";
+      CURL_BROTLI = "YES";
       CURL_DISABLE_ALTSVC = "NO";
       CURL_DISABLE_AWS = "YES";
       CURL_DISABLE_BASIC_AUTH = "NO";
@@ -2422,6 +2438,7 @@ function Build-CURL([Hashtable] $Platform) {
       USE_WIN32_LDAP = "NO";
       ZLIB_ROOT = "$BinaryCache\$($Platform.Triple)\usr";
       ZLIB_LIBRARY = "$BinaryCache\$($Platform.Triple)\usr\lib\zlibstatic.lib";
+      BROTLI_DIR = "$BinaryCache\$($Platform.Triple)\usr";
     })
 }
 
@@ -2835,6 +2852,7 @@ function Build-Foundation {
         "$BinaryCache\$($Platform.Triple)\usr\lib\libz.a"
       };
       ZLIB_INCLUDE_DIR = "$BinaryCache\$($Platform.Triple)\usr\include";
+      BROTLI_DIR = "$BinaryCache\$($Platform.Triple)\usr";
       dispatch_DIR = $DispatchCMakeModules;
       SwiftSyntax_DIR = (Get-ProjectBinaryCache $HostPlatform Compilers);
       _SwiftFoundation_SourceDIR = "$SourceCache\swift-foundation";
@@ -2857,6 +2875,7 @@ function Test-Foundation {
     $env:LIBXML_LIBRARY_PATH="$BinaryCache/$($Platform.Triple)/usr/lib"
     $env:LIBXML_INCLUDE_PATH="$BinaryCache/$($Platform.Triple)/usr/include/libxml2"
     $env:ZLIB_LIBRARY_PATH="$BinaryCache/$($Platform.Triple)/usr/lib"
+    $env:BROTLI_LIBRARY_PATH="$BinaryCache/$($Platform.Triple)/usr/lib"
     $env:CURL_LIBRARY_PATH="$BinaryCache/$($Platform.Triple)/usr/lib"
     $env:CURL_INCLUDE_PATH="$BinaryCache/$($Platform.Triple)/usr/include"
     Build-SPMProject `
@@ -3004,6 +3023,7 @@ function Build-SDK([Hashtable] $Platform, [switch] $IncludeMacros = $false) {
 
   # Third Party Dependencies
   Invoke-BuildStep Build-ZLib $Platform
+  Invoke-BuildStep Build-Brotli $Platform
   Invoke-BuildStep Build-XML2 $Platform
   Invoke-BuildStep Build-CURL $Platform
   Invoke-BuildStep Build-LLVM $Platform
diff --git a/utils/update_checkout/update-checkout-config.json b/utils/update_checkout/update-checkout-config.json
index 10c40e34198d9..3333be21dfe92 100644
--- a/utils/update_checkout/update-checkout-config.json
+++ b/utils/update_checkout/update-checkout-config.json
@@ -118,6 +118,9 @@
         "zlib": {
           "remote": { "id": "madler/zlib" }
         },
+        "brotli": {
+          "remote": { "id": "google/brotli" }
+        },
         "mimalloc": {
           "remote": { "id": "microsoft/mimalloc" },
           "platforms": [ "Windows" ]
@@ -180,6 +183,7 @@
                 "curl": "curl-8_9_1",
                 "libxml2": "v2.11.5",
                 "zlib": "v1.3.1",
+                "brotli": "v1.1.0",
                 "mimalloc": "v3.0.3",
                 "swift-subprocess": "development-snapshot-2025-07-21"
             }
@@ -236,6 +240,7 @@
                 "curl": "curl-8_9_1",
                 "libxml2": "v2.11.5",
                 "zlib": "v1.3.1",
+                "brotli": "v1.1.0",
                 "mimalloc": "v3.0.1"
             }
         },
@@ -498,6 +503,7 @@
                 "curl": "curl-8_9_1",
                 "libxml2": "v2.11.5",
                 "zlib": "v1.3.1",
+                "brotli": "v1.1.0",
                 "mimalloc": "v3.0.3",
                 "swift-subprocess": "development-snapshot-2025-07-21"
             }
@@ -556,6 +562,7 @@
                 "curl": "curl-8_9_1",
                 "libxml2": "v2.11.5",
                 "zlib": "v1.3.1",
+                "brotli": "v1.1.0",
                 "mimalloc": "v3.0.3",
                 "swift-subprocess": "development-snapshot-2025-07-21"
             }