diff --git a/1/apache/Dockerfile b/1/apache/Dockerfile
index fe93b6b..266e94f 100644
--- a/1/apache/Dockerfile
+++ b/1/apache/Dockerfile
@@ -12,8 +12,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends libzip-dev libo
 WORKDIR /var/www/html
 
 # https://github.com/backdrop/backdrop/releases
-ENV BACKDROP_VERSION=1.30.2
-ENV BACKDROP_MD5=9b85d7f71531b7eaf3e476e6666d0c0f
+ENV BACKDROP_VERSION=1.31.0
+ENV BACKDROP_MD5=0204d479a71ac692039a9f7b1e50409f
 
 RUN curl -fSL "https://github.com/backdrop/backdrop/archive/refs/tags/${BACKDROP_VERSION}.tar.gz" -o backdrop.tar.gz \
   && echo "${BACKDROP_MD5} *backdrop.tar.gz" | md5sum -c - \
diff --git a/1/fpm/Dockerfile b/1/fpm/Dockerfile
index ada87b7..f065662 100644
--- a/1/fpm/Dockerfile
+++ b/1/fpm/Dockerfile
@@ -10,8 +10,8 @@ RUN apt-get update && apt-get install -y libzip-dev libonig-dev libpng-dev libjp
 WORKDIR /var/www/html
 
 # https://github.com/backdrop/backdrop/releases
-ENV BACKDROP_VERSION=1.30.2
-ENV BACKDROP_MD5=9b85d7f71531b7eaf3e476e6666d0c0f
+ENV BACKDROP_VERSION=1.31.0
+ENV BACKDROP_MD5=0204d479a71ac692039a9f7b1e50409f
 
 RUN curl -fSL "https://github.com/backdrop/backdrop/archive/${BACKDROP_VERSION}.tar.gz" -o backdrop.tar.gz \
 	&& echo "${BACKDROP_MD5} *backdrop.tar.gz" | md5sum -c - \