diff --git a/Jenkinsfile b/Jenkinsfile
index 70117fe..8a0ad0c 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -829,7 +829,7 @@
                         TESTRUN_DRIVE          = 'd'
                         TESTRUN_SUBDIR         = "CI"
                         WINDOWS_BASE_IMAGE     = 'mcr.microsoft.com/windows/servercore'
-                        WINDOWS_BASE_IMAGE_TAG = '10.0.17763.973' // TODO switch back to using ltsc2019 once the image is fixed
+                        WINDOWS_BASE_IMAGE_TAG = 'ltsc2019'
                     }
                     agent {
                         node {
diff --git a/vendor.conf b/vendor.conf
index ef916f8..9e7c61b 100644
--- a/vendor.conf
+++ b/vendor.conf
@@ -73,7 +73,7 @@
 # get go-zfs packages
 github.com/mistifyio/go-zfs                         f784269be439d704d3dfa1906f45dd848fed2beb
 
-google.golang.org/grpc                              6eaf6f47437a6b4e2153a190160ef39a92c7eceb # v1.23.0
+google.golang.org/grpc                              39e8a7b072a67ca2a75f57fa2e0d50995f5b22f6 # v1.23.1
 
 # The version of runc should match the version that is used by the containerd
 # version that is used. If you need to update runc, open a pull request in
diff --git a/vendor/google.golang.org/grpc/internal/transport/http2_server.go b/vendor/google.golang.org/grpc/internal/transport/http2_server.go
index 83439b5..4e26f6a 100644
--- a/vendor/google.golang.org/grpc/internal/transport/http2_server.go
+++ b/vendor/google.golang.org/grpc/internal/transport/http2_server.go
@@ -138,7 +138,10 @@
 	}
 	framer := newFramer(conn, writeBufSize, readBufSize, maxHeaderListSize)
 	// Send initial settings as connection preface to client.
-	var isettings []http2.Setting
+	isettings := []http2.Setting{{
+		ID:  http2.SettingMaxFrameSize,
+		Val: http2MaxFrameLen,
+	}}
 	// TODO(zhaoq): Have a better way to signal "no limit" because 0 is
 	// permitted in the HTTP2 spec.
 	maxStreams := config.MaxStreams
diff --git a/vendor/google.golang.org/grpc/internal/transport/http_util.go b/vendor/google.golang.org/grpc/internal/transport/http_util.go
index 9d21286..8f5f334 100644
--- a/vendor/google.golang.org/grpc/internal/transport/http_util.go
+++ b/vendor/google.golang.org/grpc/internal/transport/http_util.go
@@ -667,6 +667,7 @@
 		writer: w,
 		fr:     http2.NewFramer(w, r),
 	}
+	f.fr.SetMaxReadFrameSize(http2MaxFrameLen)
 	// Opt-in to Frame reuse API on framer to reduce garbage.
 	// Frames aren't safe to read from after a subsequent call to ReadFrame.
 	f.fr.SetReuseFrames()
diff --git a/vendor/google.golang.org/grpc/version.go b/vendor/google.golang.org/grpc/version.go
index 5411a73..5888505 100644
--- a/vendor/google.golang.org/grpc/version.go
+++ b/vendor/google.golang.org/grpc/version.go
@@ -19,4 +19,4 @@
 package grpc
 
 // Version is the current grpc version.
-const Version = "1.23.0"
+const Version = "1.23.1"