diff --git a/windows1809/base/Dockerfile b/windows1809/base/Dockerfile
index 28930eba442da81740483dbc99585a0491af361d..97a34460e32a1e6f7da25a2d9a681f7adb9d4a47 100644
--- a/windows1809/base/Dockerfile
+++ b/windows1809/base/Dockerfile
@@ -7,7 +7,7 @@ RUN . $Profile; \
     [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; \
     Invoke-Expression ((New-Object Net.WebClient).DownloadString('https://chocolatey.org/install.ps1')); \
     Must-Run choco install -y dotnetfx --version 4.7.2.20180712; \
-    Must-Run choco install -y cmake --version 3.15.4 --installargs "ADD_CMAKE_TO_PATH=System"; \
+    Must-Run choco install -y cmake --version 3.15.5 --installargs "ADD_CMAKE_TO_PATH=System"; \
     Must-Run choco install -y kitware-ninja --version 1.8.2.8127911; \
     Must-Run choco install -y \
         git \