diff --git a/MICROSOFT_REVISION b/MICROSOFT_REVISION
index d8263ee986..56a6051ca2 100644
--- a/MICROSOFT_REVISION
+++ b/MICROSOFT_REVISION
@@ -1 +1 @@
-2
\ No newline at end of file
+1
\ No newline at end of file
diff --git a/VERSION b/VERSION
index 426e0d5958..57938349b8 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-go1.26.5
\ No newline at end of file
+go1.26.6
\ No newline at end of file
diff --git a/go b/go
index c19862e5f8..1ea5a71ad8 160000
--- a/go
+++ b/go
@@ -1 +1 @@
-Subproject commit c19862e5f8415b4f24b189d065ed739517c548ba
+Subproject commit 1ea5a71ad8ceb7b9f16b4b6f8ea4739a4327dd6e
diff --git a/patches/0001-Vendor-external-dependencies.patch b/patches/0001-Vendor-external-dependencies.patch
index 933c51b47d..ee218062e1 100644
--- a/patches/0001-Vendor-external-dependencies.patch
+++ b/patches/0001-Vendor-external-dependencies.patch
@@ -2193,7 +2193,7 @@ index 00000000000000..f5dc9afe4b0ead
 +// that are used by the backend package. This allows to track
 +// their versions in a single patch file.
 diff --git a/src/go.mod b/src/go.mod
-index b329ba18def47c..3b633611d198ec 100644
+index 620a311881f098..1d31de950c52f7 100644
 --- a/src/go.mod
 +++ b/src/go.mod
 @@ -11,3 +11,9 @@ require (
@@ -2207,7 +2207,7 @@ index b329ba18def47c..3b633611d198ec 100644
 +	github.com/microsoft/go-crypto-winnative v0.0.0-20260127024749-832b168a84e9
 +)
 diff --git a/src/go.sum b/src/go.sum
-index 37f908522c1926..fff82a95d3ec12 100644
+index 055a4281932ce4..4f663137c4e278 100644
 --- a/src/go.sum
 +++ b/src/go.sum
 @@ -1,3 +1,9 @@
@@ -2219,7 +2219,7 @@ index 37f908522c1926..fff82a95d3ec12 100644
 +github.com/microsoft/go-crypto-winnative v0.0.0-20260127024749-832b168a84e9/go.mod h1:gD686525Li/blRSYwSzFJ6/LJQVFJp7Y0MKp+dmqFbc=
  golang.org/x/crypto v0.46.1-0.20251210140736-7dacc380ba00 h1:JgcPM1rzpSOZS8y69FQvnY0xN0ciHlpQqwTXJcuZIA4=
  golang.org/x/crypto v0.46.1-0.20251210140736-7dacc380ba00/go.mod h1:Evb/oLKmMraqjZ2iQTwDwvCtJkczlDuTmdJXoZVzqU0=
- golang.org/x/net v0.47.1-0.20260417193450-705de46f8788 h1:fVWwoa/P68Bsajqy2FO4dha7TRBfgf09o932L4USeXI=
+ golang.org/x/net v0.47.1-0.20260731170545-cb1d721f7fb3 h1:qbgM8pnaNGo8FUbT74e+whlrJGZ0RVX6xdN8ANEYj3Y=
 diff --git a/src/go/build/deps_test.go b/src/go/build/deps_test.go
 index f4b7e9dae5f3ae..74aa45a868b35c 100644
 --- a/src/go/build/deps_test.go
@@ -38741,7 +38741,7 @@ index 00000000000000..1722410e5af193
 +	return getSystemDirectory() + "\\" + dll
 +}
 diff --git a/src/vendor/modules.txt b/src/vendor/modules.txt
-index ceaebeb8a55620..1af909781beb20 100644
+index aa2aa893310b0e..4ba42c8b8e5c65 100644
 --- a/src/vendor/modules.txt
 +++ b/src/vendor/modules.txt
 @@ -1,3 +1,26 @@