diff --git a/base/Dockerfile b/base/Dockerfile
index 150d7c64..7aa0974b 100644
--- a/base/Dockerfile
+++ b/base/Dockerfile
@@ -29,6 +29,7 @@ RUN --mount=type=cache,id=base-apk-${TARGETARCH},sharing=locked,target=/var/cach
         curl \
         git \
         gnupg \
+        gzip \
         jq \
         mariadb-client \
         mysql-client \
diff --git a/base/rootfs/usr/local/bin/download.sh b/base/rootfs/usr/local/bin/download.sh
index 829c0a8c..77bc1ed5 100755
--- a/base/rootfs/usr/local/bin/download.sh
+++ b/base/rootfs/usr/local/bin/download.sh
@@ -21,7 +21,7 @@ function usage {
        -u --url           The url of the file to download.
        -c --sha256        The sha256 checksum to use to validate the download.
        -d --dest          The location to unpack file into (optional).
-       -s --strip         Exclude the root folder when unpacking (optional).
+       -s --strip         Exclude the root folder when unpacking (optional, not supported with gzip or jar).
        -h --help          Show this help.
        -x --debug         Debug this script.
 
@@ -107,10 +107,12 @@ function unpack {
     local file="${1}"
     local dest="${2}"
     local args=()
+    local filename=
     mkdir -p "${dest}"
     if [[ -v STRIP ]]; then
         args+=("--strip-components" "1")
     fi
+    filename=$(basename "${file}")
     case "${file}" in
     *.tar.xz | *.txz)
         tar -xf "${file}" -C "${dest}" "${args[@]}"
@@ -118,6 +120,9 @@ function unpack {
     *.tar.gz | *.tgz)
         tar -xzf "${file}" -C "${dest}" "${args[@]}"
         ;;
+    *.gz | *.gzip)
+        gunzip "${file}" -f -c > "${dest}/${filename%.*}"
+        ;;
     *.zip | *.war)
         if [[ -v STRIP ]]; then
             mkdir -p /tmp/unpack
diff --git a/matomo/Dockerfile b/matomo/Dockerfile
index 5a442573..dc2f1104 100644
--- a/matomo/Dockerfile
+++ b/matomo/Dockerfile
@@ -3,15 +3,15 @@ FROM nginx
 
 ARG TARGETARCH
 
-ARG MATOMO_VERSION=4.13.0
+ARG MATOMO_VERSION=4.15.1
 ARG MATOMO_FILE=${MATOMO_VERSION}.tar.gz
 ARG MATOMO_URL=https://builds.matomo.org/matomo-${MATOMO_FILE}
-ARG MATOMO_SHA256=59614fbfa870d354f8abc634cc21dbbebda2b9fde31592df8c813c39e1dff981
+ARG MATOMO_SHA256=5e77e2a6b18ba8542a3e4df481c0152dd059de960c49d04f7e789c9bb5753d27
 
-ARG EXTRA_TOOLS_VERSION=4.0.1-beta4
+ARG EXTRA_TOOLS_VERSION=4.1.0-beta5
 ARG EXTRA_TOOLS_FILE=${EXTRA_TOOLS_VERSION}.tar.gz
 ARG EXTRA_TOOLS_URL=https://github.com/digitalist-se/extratools/archive/refs/tags/${EXTRA_TOOLS_FILE}
-ARG EXTRA_TOOLS_SHA256=1d04ee7b871c76c9f875da100e20e9472059b2a4fe7c52830360e90f205779e2
+ARG EXTRA_TOOLS_SHA256=ce9c9f1d01aaf04e3dfded21d6b9080c1fda633535295dc1c8cd0427bcdc826f
 
 EXPOSE 8000
 
@@ -30,7 +30,7 @@ RUN --mount=type=cache,id=matomo-downloads-${TARGETARCH},sharing=locked,target=/
     wget --directory-prefix=/var/www/matomo "https://raw.githubusercontent.com/matomo-org/matomo/${MATOMO_VERSION}/composer.json" && \
     wget --directory-prefix=/var/www/matomo "https://raw.githubusercontent.com/matomo-org/matomo/${MATOMO_VERSION}/composer.lock" && \
     composer require -d /var/www/matomo symfony/yaml:~2.6.0 && \
-    composer require -d /var/www/matomo symfony/process:^3.4 && \
+    composer require -d /var/www/matomo symfony/process:^5.4 && \
     composer install -d /var/www/matomo && \
     download.sh \
         --url "${EXTRA_TOOLS_URL}" \
diff --git a/matomo/README.md b/matomo/README.md
index 036d60ba..7d2be5c4 100644
--- a/matomo/README.md
+++ b/matomo/README.md
@@ -1,6 +1,6 @@
 # Matomo
 
-Docker image for [Matomo] version 4.13.0.
+Docker image for [Matomo] version 4.15.1
 
 Please refer to the [Matomo Documentation] for more in-depth information.