diff --git a/README.md b/README.md
index 0cd002e232..6b4deaff5f 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ Prerequisites:
 - Windows 10, 8.1, or 7
 - Visual Studio 2017 or Visual Studio 2015 Update 3
 - Git
-- *Optional: CMake 3.9.0*
+- *Optional: CMake 3.9.1*
 
 Clone this repository, then run
 ```
diff --git a/scripts/fetchDependency.ps1 b/scripts/fetchDependency.ps1
index 13799cc730..6941ed21e2 100644
--- a/scripts/fetchDependency.ps1
+++ b/scripts/fetchDependency.ps1
@@ -151,12 +151,12 @@ function SelectProgram([Parameter(Mandatory=$true)][string]$Dependency)
 
     if($Dependency -eq "cmake")
     {
-        $requiredVersion = "3.9.0"
-        $downloadVersion = "3.9.0"
-        $url = "https://cmake.org/files/v3.9/cmake-3.9.0-win32-x86.zip"
-        $downloadPath = "$downloadsDir\cmake-3.9.0-win32-x86.zip"
-        $expectedDownloadedFileHash = "9d593839f64b94718a1b75b8519b56ecb959e4d37d406bf2a087e2c1f7a6b89c"
-        $executableFromDownload = "$downloadsDir\cmake-3.9.0-win32-x86\bin\cmake.exe"
+        $requiredVersion = "3.9.1"
+        $downloadVersion = "3.9.1"
+        $url = "https://cmake.org/files/v3.9/cmake-3.9.1-win32-x86.zip"
+        $downloadPath = "$downloadsDir\cmake-3.9.1-win32-x86.zip"
+        $expectedDownloadedFileHash = "e0d9501bd34e3100e925dcb2e07f5f0ce8980bdbe5fce0ae950b21368d54c1a1"
+        $executableFromDownload = "$downloadsDir\cmake-3.9.1-win32-x86\bin\cmake.exe"
         $extractionType = $ExtractionType_ZIP
         $extractionFolder = $downloadsDir
     }
diff --git a/toolsrc/src/VcpkgPaths.cpp b/toolsrc/src/VcpkgPaths.cpp
index f3501e1626..38b11584a1 100644
--- a/toolsrc/src/VcpkgPaths.cpp
+++ b/toolsrc/src/VcpkgPaths.cpp
@@ -98,10 +98,10 @@ namespace vcpkg
 
     static fs::path get_cmake_path(const fs::path& downloads_folder, const fs::path scripts_folder)
     {
-        static constexpr std::array<int, 3> expected_version = {3, 9, 0};
+        static constexpr std::array<int, 3> expected_version = {3, 9, 1};
         static const std::wstring version_check_arguments = L"--version";
 
-        const fs::path downloaded_copy = downloads_folder / "cmake-3.9.0-win32-x86" / "bin" / "cmake.exe";
+        const fs::path downloaded_copy = downloads_folder / "cmake-3.9.1-win32-x86" / "bin" / "cmake.exe";
         const std::vector<fs::path> from_path = find_from_PATH(L"cmake");
 
         std::vector<fs::path> candidate_paths;