diff --git a/Dockerfile b/Dockerfile
index 47475c0..e982833 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:10.9-slim@sha256:33965bf1eaadb19ce2f9396595c4a669e3e04c1ab8cc073b8929f529c58404bb
+FROM debian:11.0-slim@sha256:dacf278785a4daa9de07596ec739dbc07131e189942772210709c5c0777e8437
 
 ENV COTURN_VERSION="4.5.2"
 ENV PROMETHEUS_CLIENT_VERSION="v0.1.3"
@@ -9,9 +9,9 @@ WORKDIR /root/coturn
 
 RUN apt-get update && apt-get dist-upgrade -y && apt-get install -y \
     build-essential="12.6" \
-    pkg-config="0.29-6" \
-    libssl-dev="1.1.1d-0+deb10u6" \
-    libevent-dev="2.1.8-stable-4" \
+    pkg-config="0.29.2-1" \
+    libssl-dev="1.1.1k-1" \
+    libevent-dev="2.1.12-stable-1" \
     curl \
  && PCV=$(echo "${PROMETHEUS_CLIENT_VERSION}" | cut -c 2-) \
  && curl -L "https://github.com/digitalocean/prometheus-client-c/releases/download/${PROMETHEUS_CLIENT_VERSION}/libprom-dev-${PCV}-Linux.deb" > /tmp/libprom.deb \