diff --git a/build-x86_64-linux.dockerfile b/build-x86_64-linux.dockerfile
index ca9d1d90128..7336724b725 100644
--- a/build-x86_64-linux.dockerfile
+++ b/build-x86_64-linux.dockerfile
@@ -25,7 +25,6 @@ RUN \
         #
         # Running mach
         python2.7 \
-        python-virtualenv \
         virtualenv \
         #
         # Multiple C/C++ dependencies built from source
diff --git a/run-x86_64-linux.dockerfile b/run-x86_64-linux.dockerfile
index 765f8c2b2ba..538471f467d 100644
--- a/run-x86_64-linux.dockerfile
+++ b/run-x86_64-linux.dockerfile
@@ -16,12 +16,14 @@ RUN \
         #
         # Running mach
         python2.7 \
-        python-virtualenv \
         virtualenv \
         #
         # Fetching build artifacts
         curl \
         #
         # Servo’s runtime dependencies
-        libgstreamer-plugins-bad1.0 \
-        libssl1.0.0
+        libgl1 \
+        libssl1.0.0 \
+        libdbus-1-3 \
+        libgstreamer-plugins-bad1.0-0 \
+        gstreamer1.0-plugins-good