diff --git a/Dockerfile b/Dockerfile
index 980ef91..fc2a93f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,12 +1,14 @@
 FROM golang:1.13-buster
 
+ARG SIGNAL_CLI_VERSION=0.6.4
+
 RUN apt-get update \
 	&& apt-get install -y --no-install-recommends wget default-jre software-properties-common git \
 	&& rm -rf /var/lib/apt/lists/* 
 
-RUN wget -P /tmp/ https://github.com/AsamK/signal-cli/releases/download/v0.6.4/signal-cli-0.6.4.tar.gz \
-    && tar -C /usr/bin -xzf /tmp/signal-cli-0.6.4.tar.gz \
-    && rm -rf /tmp/signal-cli-0.6.4.tar.gz
+RUN wget -P /tmp/ https://github.com/AsamK/signal-cli/releases/download/v${SIGNAL_CLI_VERSION}/signal-cli-${SIGNAL_CLI_VERSION}.tar.gz \
+    && tar -C /usr/bin -xzf /tmp/signal-cli-${SIGNAL_CLI_VERSION}.tar.gz \
+    && rm -rf /tmp/signal-cli-${SIGNAL_CLI_VERSION}.tar.gz
 
 
 RUN mkdir -p /signal-cli-config/
@@ -14,7 +16,7 @@ RUN mkdir -p /home/.local/share/signal-cli
 COPY src/ /tmp/signal-cli-rest-api-src
 RUN cd /tmp/signal-cli-rest-api-src && go get -d ./... && go build main.go
 
-ENV PATH /tmp/signal-cli-rest-api-src/:/usr/bin/signal-cli-0.6.2/bin/:$PATH
+ENV PATH /tmp/signal-cli-rest-api-src/:/usr/bin/signal-cli-${SIGNAL_CLI_VERSION}/bin/:$PATH
 
 EXPOSE 8080