diff --git a/symfony/symfony/3.3/manifest.json b/symfony/symfony/3.3/manifest.json
new file mode 100644
index 00000000..2c63c085
--- /dev/null
+++ b/symfony/symfony/3.3/manifest.json
@@ -0,0 +1,2 @@
+{
+}
diff --git a/symfony/symfony/3.3/post-install.txt b/symfony/symfony/3.3/post-install.txt
new file mode 100644
index 00000000..e6d4d5b9
--- /dev/null
+++ b/symfony/symfony/3.3/post-install.txt
@@ -0,0 +1,5 @@
+<bg=yellow;fg=black>                                                                                 </>
+<bg=yellow;fg=black> Using "symfony/symfony" in your dependencies is incompatible with Symfony Flex! </>
+<bg=yellow;fg=black>                                                                                 </>
+
+  * <fg=blue>Instead</> use individual <comment>symfony/*</comment> packages.