diff --git a/Dockerfile b/Dockerfile
index a7cdea56..08b3f8fd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -157,7 +157,10 @@ RUN curl --retry 5 --retry-delay 5 -sL https://cpanmin.us/ | perl - -nq --no-wge
 ##############################
 RUN wget --tries=5 -O phive.phar https://phar.io/releases/phive.phar \
     && wget --tries=5 -O phive.phar.asc https://phar.io/releases/phive.phar.asc \
-    && gpg --keyserver pool.sks-keyservers.net --recv-keys 0x9D8A98B29B2D5D79 \
+    && PHAR_KEY_ID="0x9D8A98B29B2D5D79" \
+    && ( gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$PHAR_KEY_ID" \
+    || gpg --keyserver pgp.mit.edu --recv-keys "$PHAR_KEY_ID" \
+    || gpg --keyserver keyserver.pgp.com --recv-keys "$PHAR_KEY_ID" ) \
     && gpg --verify phive.phar.asc phive.phar \
     && chmod +x phive.phar \
     && mv phive.phar /usr/local/bin/phive \