diff --git a/WORKSPACE b/WORKSPACE
index 4066d7f09dcb..43e2bad103ac 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -108,7 +108,7 @@ load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_depe
 
 go_rules_dependencies()
 
-go_register_toolchains(go_version = "1.16.5")
+go_register_toolchains(go_version = "1.16.6")
 
 # Configure nodeJS.
 load("@build_bazel_rules_nodejs//:index.bzl", "yarn_install")
diff --git a/build/bootstrap/bootstrap-debian.sh b/build/bootstrap/bootstrap-debian.sh
index 53318febb5ce..d8d1b85d7cf7 100755
--- a/build/bootstrap/bootstrap-debian.sh
+++ b/build/bootstrap/bootstrap-debian.sh
@@ -46,9 +46,9 @@ sudo tar -C /usr -zxf /tmp/cmake.tgz && rm /tmp/cmake.tgz
 
 # Install Go.
 trap 'rm -f /tmp/go.tgz' EXIT
-curl -fsSL https://dl.google.com/go/go1.16.5.linux-amd64.tar.gz > /tmp/go.tgz
+curl -fsSL https://dl.google.com/go/go1.16.6.linux-amd64.tar.gz > /tmp/go.tgz
 sha256sum -c - <<EOF
-b12c23023b68de22f74c0524f10b753e7b08b1504cb7e417eccebdd3fae49061 /tmp/go.tgz
+be333ef18b3016e9d7cb7b1ff1fdb0cac800ca0be4cf2290fe613b3d069dfe0d /tmp/go.tgz
 EOF
 sudo tar -C /usr/local -zxf /tmp/go.tgz && rm /tmp/go.tgz
 
diff --git a/build/builder.sh b/build/builder.sh
index a547af7d43cb..25bf869120ad 100755
--- a/build/builder.sh
+++ b/build/builder.sh
@@ -3,7 +3,7 @@
 set -euo pipefail
 
 image=cockroachdb/builder
-version=20210625-235250
+version=20210714-130445
 
 function init() {
   docker build --tag="${image}" "$(dirname "${0}")/builder"
diff --git a/build/builder/Dockerfile b/build/builder/Dockerfile
index ad43a0dff360..7ef6e18a3354 100644
--- a/build/builder/Dockerfile
+++ b/build/builder/Dockerfile
@@ -112,8 +112,8 @@ RUN curl -fsSL https://github.com/Kitware/CMake/releases/download/v3.20.3/cmake-
 # releases of Go will no longer be run in CI once it is changed. Consider
 # bumping the minimum allowed version of Go in /build/go-version-check.sh.
 RUN DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends golang \
- && curl -fsSL https://storage.googleapis.com/golang/go1.16.5.src.tar.gz -o golang.tar.gz \
- && echo '7bfa7e5908c7cc9e75da5ddf3066d7cbcf3fd9fa51945851325eebc17f50ba80 golang.tar.gz' | sha256sum -c - \
+ && curl -fsSL https://storage.googleapis.com/golang/go1.16.6.src.tar.gz -o golang.tar.gz \
+ && echo 'a3a5d4bc401b51db065e4f93b523347a4d343ae0c0b08a65c3423b05a138037d golang.tar.gz' | sha256sum -c - \
  && tar -C /usr/local -xzf golang.tar.gz \
  && rm golang.tar.gz \
  && cd /usr/local/go/src \
diff --git a/build/go-version-check.sh b/build/go-version-check.sh
index d5370ed09f90..4148ba8cf8fe 100755
--- a/build/go-version-check.sh
+++ b/build/go-version-check.sh
@@ -7,7 +7,7 @@
 
 required_version_major=1
 minimum_version_minor=16
-minimum_version_16_patch=5
+minimum_version_16_patch=6
 
 go=${1-go}
 
diff --git a/build/packer/teamcity-agent.sh b/build/packer/teamcity-agent.sh
index 57bf3cfba9d2..1065ecfb128c 100644
--- a/build/packer/teamcity-agent.sh
+++ b/build/packer/teamcity-agent.sh
@@ -43,9 +43,9 @@ apt-get install --yes \
   pass \
   unzip
 
-curl -fsSL https://dl.google.com/go/go1.16.5.linux-amd64.tar.gz > /tmp/go.tgz
+curl -fsSL https://dl.google.com/go/go1.16.6.linux-amd64.tar.gz > /tmp/go.tgz
 sha256sum -c - <<EOF
-b12c23023b68de22f74c0524f10b753e7b08b1504cb7e417eccebdd3fae49061 /tmp/go.tgz
+be333ef18b3016e9d7cb7b1ff1fdb0cac800ca0be4cf2290fe613b3d069dfe0d /tmp/go.tgz
 EOF
 tar -C /usr/local -zxf /tmp/go.tgz && rm /tmp/go.tgz
 
diff --git a/pkg/cmd/roachtest/tests/go_helpers.go b/pkg/cmd/roachtest/tests/go_helpers.go
index 281294cf074b..9b3352c82724 100644
--- a/pkg/cmd/roachtest/tests/go_helpers.go
+++ b/pkg/cmd/roachtest/tests/go_helpers.go
@@ -43,13 +43,13 @@ func installGolang(
 	}
 
 	if err := repeatRunE(
-		ctx, t, c, node, "download go", `curl -fsSL https://dl.google.com/go/go1.16.5.linux-amd64.tar.gz > /tmp/go.tgz`,
+		ctx, t, c, node, "download go", `curl -fsSL https://dl.google.com/go/go1.16.6.linux-amd64.tar.gz > /tmp/go.tgz`,
 	); err != nil {
 		t.Fatal(err)
 	}
 	if err := repeatRunE(
 		ctx, t, c, node, "verify tarball", `sha256sum -c - <<EOF
-b12c23023b68de22f74c0524f10b753e7b08b1504cb7e417eccebdd3fae49061 /tmp/go.tgz
+be333ef18b3016e9d7cb7b1ff1fdb0cac800ca0be4cf2290fe613b3d069dfe0d /tmp/go.tgz
 EOF`,
 	); err != nil {
 		t.Fatal(err)