diff --git a/Makefile.fish b/Makefile.fish
index 7c1c724..c0d7b88 100755
--- a/Makefile.fish
+++ b/Makefile.fish
@@ -30,11 +30,21 @@ function build
 
 	for crate in $wasm_execs
 
+		if test (count $argv[1]) -gt 0 -a $argv[1] = "--release"
+
+			set mode
+
+		else
+
+			set mode --debug
+
+		end
+
 		pushd $crate
 
-			echo "wasm-pack build $argv[1] $crate"
+			echo "wasm-pack build $mode $crate"
 
-			wasm-pack build $argv[1] --target no-modules; or exit 1
+			wasm-pack build $mode --target no-modules; or exit 1
 
 		popd
 
diff --git a/ekke_core b/ekke_core
index b4f6924..05a4fdb 160000
--- a/ekke_core
+++ b/ekke_core
@@ -1 +1 @@
-Subproject commit b4f69246f1ed069848eadff6eb5673ab41fbf894
+Subproject commit 05a4fdb6ea5385cfe463410be4c17278be3d89c5
diff --git a/ekke_core_frontend b/ekke_core_frontend
index 37d4ffe..b1e8974 160000
--- a/ekke_core_frontend
+++ b/ekke_core_frontend
@@ -1 +1 @@
-Subproject commit 37d4ffeafa24bc3fa0940d3094288931a0025b53
+Subproject commit b1e8974bf48f2ab306603c33b72583d1df3d2408
diff --git a/ekke_io b/ekke_io
index 2d2f9ff..d995b93 160000
--- a/ekke_io
+++ b/ekke_io
@@ -1 +1 @@
-Subproject commit 2d2f9ff7315fe922c4ac2380a33d6846121e6d30
+Subproject commit d995b93aa407259f4b78080a5e45121e77349f7d