diff --git a/boring-nginx/Dockerfile b/boring-nginx/Dockerfile
index 88c2c17..6ad8c99 100644
--- a/boring-nginx/Dockerfile
+++ b/boring-nginx/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.8
+FROM alpine:3.9
 
 ENV UID=991 GID=991
 
diff --git a/nginx-php/Dockerfile.7.2 b/nginx-php/Dockerfile.7.2
index 2b8c88f..3999506 100644
--- a/nginx-php/Dockerfile.7.2
+++ b/nginx-php/Dockerfile.7.2
@@ -1,4 +1,4 @@
-FROM alpine:3.8
+FROM alpine:3.9
 
 ARG BUILD_CORES
 
diff --git a/nginx-php/Dockerfile.7.3 b/nginx-php/Dockerfile.7.3
index 3544acd..651ba65 100644
--- a/nginx-php/Dockerfile.7.3
+++ b/nginx-php/Dockerfile.7.3
@@ -1,4 +1,4 @@
-FROM alpine:3.8
+FROM alpine:3.9
 
 ARG BUILD_CORES
 
diff --git a/searx/Dockerfile b/searx/Dockerfile
index 3da9ed8..0352d96 100644
--- a/searx/Dockerfile
+++ b/searx/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.8
+FROM alpine:3.9
 
 ARG VERSION=0.15.0