diff --git a/build.ps1 b/build.ps1
index ef6a25d2..2f16566e 100644
--- a/build.ps1
+++ b/build.ps1
@@ -8,7 +8,7 @@ param(
     [Parameter(Position = 2, ValueFromPipelineByPropertyName = $true)]
 	[string] $DockerImageName = "snapx",
 	[Parameter(Position = 3, ValueFromPipelineByPropertyName = $true)]
-	[string] $DockerVersion = "37.0",
+	[string] $DockerVersion = "38.0",
 	[Parameter(Position = 4, ValueFromPipelineByPropertyName = $true)]
     [switch] $DockerLocal,
     [Parameter(Position = 5, ValueFromPipelineByPropertyName = $true)]
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 957dbe3b..f82991cc 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -5,7 +5,7 @@ ENV SNAPX_DOCKER_WORKING_DIR /build/snapx
 
 ARG DOTNET_60_SDK_VERSION=6.0.425
 ARG DOTNET_80_SDK_VERSION=8.0.401
-ARG DOTNET_90_SDK_VERSION=9.0.100-preview.7.24407.12
+ARG DOTNET_90_SDK_VERSION=9.0.100-rc.1.24452.12
 ARG DOTNET_RID=linux-x64