diff --git a/docker/Dockerfile.linux.amd64 b/docker/Dockerfile.linux.amd64
index 18c80a0..c93fd1e 100644
--- a/docker/Dockerfile.linux.amd64
+++ b/docker/Dockerfile.linux.amd64
@@ -1,4 +1,4 @@
-FROM plugins/base:multiarch
+FROM plugins/base:multiarch@sha256:d565995a431a3375b0dfd70fec45bc1ba9cdb174562f1fe463b1cff8998e41aa
 
 LABEL maintainer="Drone.IO Community <drone-dev@googlegroups.com>" \
   org.label-schema.name="Drone Matrix" \
diff --git a/docker/Dockerfile.linux.arm b/docker/Dockerfile.linux.arm
index ff239d1..4318aa1 100644
--- a/docker/Dockerfile.linux.arm
+++ b/docker/Dockerfile.linux.arm
@@ -1,4 +1,4 @@
-FROM plugins/base:multiarch
+FROM plugins/base:multiarch@sha256:d565995a431a3375b0dfd70fec45bc1ba9cdb174562f1fe463b1cff8998e41aa
 
 LABEL maintainer="Drone.IO Community <drone-dev@googlegroups.com>" \
   org.label-schema.name="Drone Matrix" \
diff --git a/docker/Dockerfile.linux.arm64 b/docker/Dockerfile.linux.arm64
index db0b28e..0864042 100644
--- a/docker/Dockerfile.linux.arm64
+++ b/docker/Dockerfile.linux.arm64
@@ -1,4 +1,4 @@
-FROM plugins/base:multiarch
+FROM plugins/base:multiarch@sha256:d565995a431a3375b0dfd70fec45bc1ba9cdb174562f1fe463b1cff8998e41aa
 
 LABEL maintainer="Drone.IO Community <drone-dev@googlegroups.com>" \
   org.label-schema.name="Drone Matrix" \
diff --git a/docker/Dockerfile.windows.1809 b/docker/Dockerfile.windows.1809
index c081a66..eac6a64 100644
--- a/docker/Dockerfile.windows.1809
+++ b/docker/Dockerfile.windows.1809
@@ -1,5 +1,5 @@
 # escape=`
-FROM plugins/base:windows-1809-amd64
+FROM plugins/base:windows-1809-amd64@sha256:63dbd974503ec646d49a1eff095ff5000d9869fe1d7b48c51d1ecf5e7cba1f57
 
 LABEL maintainer="Drone.IO Community <drone-dev@googlegroups.com>" `
   org.label-schema.name="Drone Matrix" `
diff --git a/docker/Dockerfile.windows.1903 b/docker/Dockerfile.windows.1903
index 85bc024..c99b7e6 100644
--- a/docker/Dockerfile.windows.1903
+++ b/docker/Dockerfile.windows.1903
@@ -1,5 +1,5 @@
 # escape=`
-FROM plugins/base:windows-1903-amd64
+FROM plugins/base:windows-1903-amd64@sha256:338cdba56a7f30d721b6567d382b95465642993f85564cb385e65b2f3f84352c
 
 LABEL maintainer="Drone.IO Community <drone-dev@googlegroups.com>" `
   org.label-schema.name="Drone Matrix" `
diff --git a/docker/Dockerfile.windows.1909 b/docker/Dockerfile.windows.1909
index 83daa41..996fc05 100644
--- a/docker/Dockerfile.windows.1909
+++ b/docker/Dockerfile.windows.1909
@@ -1,5 +1,5 @@
 # escape=`
-FROM plugins/base:windows-1909-amd64
+FROM plugins/base:windows-1909-amd64@sha256:fc1978bbe23e889dd7c5729cc8c44c2447a3ad00b539872167fe09ea43a136c7
 
 LABEL maintainer="Drone.IO Community <drone-dev@googlegroups.com>" `
   org.label-schema.name="Drone Matrix" `