diff --git a/Dockerfile b/Dockerfile
index 408fbae9..4357c032 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -34,10 +34,11 @@ RUN apt-get -qq update \
     dirmngr \
     gnupg \
     git \
+    jq \
     python3-packaging \
     python3-venv \
+    rsync \
     ruby-full \
-    jq \
     unzip \
     maven \
   && apt-get clean \
@@ -54,8 +55,11 @@ RUN : \
   && rm /tmp/packages-microsoft-prod.deb \
   && curl -fsSL https://download.docker.com/linux/debian/gpg | apt-key add - \
   && echo "deb [arch=amd64] https://download.docker.com/linux/debian ${VERSION_CODENAME} stable" >> /etc/apt/sources.list \
-  && curl -fsSL https://packages.erlang-solutions.com/debian/erlang_solutions.asc | apt-key add - \
-  && echo 'deb https://packages.erlang-solutions.com/debian bullseye contrib' >> /etc/apt/sources.list \
+  # Note we use the Erlang Solutions-provided binaries as the ones in Debian were too old
+  # This may have changed and we may want to revert back to official Debian packages
+  # See https://www.erlang-solutions.com/downloads/#
+  && curl -fsSL https://binaries2.erlang-solutions.com/GPG-KEY-pmanager.asc | apt-key add - \
+  && echo "deb https://binaries2.erlang-solutions.com/debian bullseye-elixir-1.15 contrib" >> /etc/apt/sources.list \
   && apt-get update -qq \
   && apt-get install -y --no-install-recommends \
     dotnet-sdk-9.0 \