diff --git a/Makefile b/Makefile
index 3eda76b3a4..2766d55d43 100644
--- a/Makefile
+++ b/Makefile
@@ -18,8 +18,8 @@ GRAVITY_PKG_PATH ?= github.com/gravitational/gravity
 ASSETSDIR=$(TOP)/assets
 BINDIR ?= /usr/bin
 
-# Current Kubernetes version: 1.14.5
-K8S_VER := 1.14.5
+# Current Kubernetes version: 1.14.6
+K8S_VER := 1.14.6
 # Kubernetes version suffix for the planet package, constructed by concatenating
 # major + minor padded to 2 chars with 0 + patch also padded to 2 chars, e.g.
 # 1.13.5 -> 11305, 1.13.12 -> 11312, 2.0.0 -> 20000 and so on
@@ -42,7 +42,7 @@ RELEASE_OUT ?=
 TELEPORT_TAG = 3.2.7
 # TELEPORT_REPOTAG adapts TELEPORT_TAG to the teleport tagging scheme
 TELEPORT_REPOTAG := v$(TELEPORT_TAG)
-PLANET_TAG := 6.0.7-$(K8S_VER_SUFFIX)
+PLANET_TAG := 6.0.8-$(K8S_VER_SUFFIX)
 PLANET_BRANCH := $(PLANET_TAG)
 K8S_APP_TAG := $(GRAVITY_TAG)
 TELEKUBE_APP_TAG := $(GRAVITY_TAG)
diff --git a/build.assets/Dockerfile b/build.assets/Dockerfile
index b3a091b1db..7fff1c9435 100644
--- a/build.assets/Dockerfile
+++ b/build.assets/Dockerfile
@@ -1,4 +1,4 @@
-FROM quay.io/gravitational/debian-venti:go1.11.5-stretch
+FROM quay.io/gravitational/debian-venti:go1.12.9-stretch
 
 ARG PROTOC_VER
 ARG PROTOC_PLATFORM
@@ -18,11 +18,11 @@ RUN (mkdir -p /gopath/src/github.com/gravitational/gravity && \
      chmod 777 /tmp)
 
 ENV LANGUAGE="en_US.UTF-8" \
-    LANG="en_US.UTF-8" \
-    LC_ALL="en_US.UTF-8" \
-    LC_CTYPE="en_US.UTF-8" \
-    GOPATH="/gopath" \
-    PATH="$PATH:/opt/protoc/bin:/opt/go/bin:/gopath/bin"
+     LANG="en_US.UTF-8" \
+     LC_ALL="en_US.UTF-8" \
+     LC_CTYPE="en_US.UTF-8" \
+     GOPATH="/gopath" \
+     PATH="$PATH:/opt/protoc/bin:/opt/go/bin:/gopath/bin"
 
 RUN (mkdir -p /gopath/src/github.com/gravitational && \
      cd /gopath/src/github.com/gravitational && \
@@ -36,8 +36,8 @@ RUN (mkdir -p /opt/protoc && \
      wget --quiet -O /tmp/${TARBALL} ${PROTOC_URL} && \
      unzip -d /opt/protoc /tmp/${TARBALL} && \
      go get -u github.com/gogo/protobuf/proto github.com/gogo/protobuf/protoc-gen-gogo github.com/gogo/protobuf/gogoproto \
-	 github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway \
-	 github.com/grpc-ecosystem/grpc-gateway/protoc-gen-swagger)
+     github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway \
+     github.com/grpc-ecosystem/grpc-gateway/protoc-gen-swagger)
 
 RUN cd ${GOPATH}/src/github.com/gogo/protobuf && git reset --hard ${GOGO_PROTO_TAG} && make install
 RUN cd ${GOPATH}/src/github.com/grpc-ecosystem/grpc-gateway && git reset --hard ${GRPC_GATEWAY_TAG} && go install ./protoc-gen-grpc-gateway