diff --git a/fgdata b/fgdata
index bbbbfd4..9d59976 160000
--- a/fgdata
+++ b/fgdata
@@ -1 +1 @@
-Subproject commit bbbbfd4dba554eb533b8a5ea2525f3795c7528d6
+Subproject commit 9d599765ed23371585840aa8f0131591c8927830
diff --git a/flightgear b/flightgear
index 39aecdc..14be037 160000
--- a/flightgear
+++ b/flightgear
@@ -1 +1 @@
-Subproject commit 39aecdc080068c346104343ff858aeb92259161a
+Subproject commit 14be0370998d4d0331386d8ebf3bdb5fefcabcd1
diff --git a/simgear b/simgear
index f20b416..6e0c39b 160000
--- a/simgear
+++ b/simgear
@@ -1 +1 @@
-Subproject commit f20b416cfeb5b98168c97fec29f76778cf4871ff
+Subproject commit 6e0c39bb68ab2113611087fdb932846ce87e1613
diff --git a/version b/version
index f9059fb..e972204 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-2020.3.3
+2020.3.4