diff --git a/etc/taskcluster/docker/build.dockerfile b/etc/taskcluster/docker/build.dockerfile
index 4d2187c5fa7..e05240d4f12 100644
--- a/etc/taskcluster/docker/build.dockerfile
+++ b/etc/taskcluster/docker/build.dockerfile
@@ -25,7 +25,7 @@ RUN \
         llvm \
         llvm-dev \
         # GStreamer
-        libpcre3 \
+        libpcre3-dev \
         #
         # OpenSSL
         libssl-dev \