diff --git a/Rakefile.cross b/Rakefile.cross
index e970f4691..4e1b782e6 100644
--- a/Rakefile.cross
+++ b/Rakefile.cross
@@ -29,8 +29,8 @@ class CrossLibrary < OpenStruct
 		self.host_platform              = toolchain
 
 		# Cross-compilation constants
-		self.openssl_version            = ENV['OPENSSL_VERSION'] || '1.1.0f'
-		self.postgresql_version         = ENV['POSTGRESQL_VERSION'] || '9.6.3'
+		self.openssl_version            = ENV['OPENSSL_VERSION'] || '1.1.0g'
+		self.postgresql_version         = ENV['POSTGRESQL_VERSION'] || '10.1'
 
 		# Check if symlinks work in the current working directory.
 		# This fails, if rake-compiler-dock is running on a Windows box.