diff --git a/gui/ice40/mainwindow.cc b/gui/ice40/mainwindow.cc
index b08e5435..bb5b6ab5 100644
--- a/gui/ice40/mainwindow.cc
+++ b/gui/ice40/mainwindow.cc
@@ -87,6 +87,8 @@ void MainWindow::new_proj()
         arch.insert("Lattice U4K", ArchArgs::U4K);
     if (Arch::isAvailable(ArchArgs::UP5K))
         arch.insert("Lattice UP5K", ArchArgs::UP5K);
+    if (Arch::isAvailable(ArchArgs::LP4K))
+        arch.insert("Lattice LP4K", ArchArgs::LP4K);
     if (Arch::isAvailable(ArchArgs::LP8K))
         arch.insert("Lattice LP8K", ArchArgs::LP8K);
     if (Arch::isAvailable(ArchArgs::HX4K))
diff --git a/ice40/arch.cc b/ice40/arch.cc
index b20245fc..a94d40c8 100644
--- a/ice40/arch.cc
+++ b/ice40/arch.cc
@@ -55,7 +55,7 @@ static const ChipInfoPOD *get_chip_info(ArchArgs::ArchArgsTypes chip)
         chipdb = "ice40/chipdb-u4k.bin";
     } else if (chip == ArchArgs::UP5K) {
         chipdb = "ice40/chipdb-5k.bin";
-    } else if (chip == ArchArgs::LP8K || chip == ArchArgs::HX8K || chip == ArchArgs::HX4K) {
+    } else if (chip == ArchArgs::LP8K || chip == ArchArgs::HX8K || chip == ArchArgs::LP4K || chip == ArchArgs::HX4K) {
         chipdb = "ice40/chipdb-8k.bin";
     } else {
         log_error("Unknown chip\n");
@@ -75,7 +75,7 @@ std::vector<std::string> Arch::getSupportedPackages(ArchArgs::ArchArgsTypes chip
     std::vector<std::string> packages;
     for (int i = 0; i < chip_info->num_packages; i++) {
        std::string name = chip_info->packages_data[i].name.get();
-       if (chip == ArchArgs::HX4K)
+       if (chip == ArchArgs::LP4K || chip == ArchArgs::HX4K)
        {
            if (name.find(":4k") != std::string::npos)
                name = name.substr(0, name.size()-3);
@@ -99,7 +99,7 @@ Arch::Arch(ArchArgs args) : args(args)
 
     package_info = nullptr;
     std::string package_name = args.package;
-    if (args.type == ArchArgs::HX4K)
+    if (args.type == ArchArgs::LP4K || args.type == ArchArgs::HX4K)
         package_name += ":4k";
 
     for (int i = 0; i < chip_info->num_packages; i++) {
@@ -132,6 +132,8 @@ std::string Arch::getChipName() const
         return "Lattice UP5K";
     } else if (args.type == ArchArgs::U4K) {
         return "Lattice U4K";
+    } else if (args.type == ArchArgs::LP4K) {
+        return "Lattice LP4K";
     } else if (args.type == ArchArgs::LP8K) {
         return "Lattice LP8K";
     } else if (args.type == ArchArgs::HX4K) {
@@ -157,6 +159,8 @@ IdString Arch::archArgsToId(ArchArgs args) const
         return id("up5k");
     if (args.type == ArchArgs::U4K)
         return id("u4k");
+    if (args.type == ArchArgs::LP4K)
+        return id("lp4k");
     if (args.type == ArchArgs::LP8K)
         return id("lp8k");
     if (args.type == ArchArgs::HX4K)
diff --git a/ice40/arch.h b/ice40/arch.h
index 9197dcd2..6c79f349 100644
--- a/ice40/arch.h
+++ b/ice40/arch.h
@@ -385,6 +385,7 @@ struct ArchArgs
         NONE,
         LP384,
         LP1K,
+        LP4K,
         LP8K,
         HX1K,
         HX4K,
diff --git a/ice40/main.cc b/ice40/main.cc
index fedd0918..bfbe3b8c 100644
--- a/ice40/main.cc
+++ b/ice40/main.cc
@@ -134,6 +134,11 @@ std::unique_ptr<Context> Ice40CommandHandler::createContext(std::unordered_map<s
         chipArgs.package = "tq144";
     }
 
+    if (vm.count("lp4k")) {
+        chipArgs.type = ArchArgs::LP4K;
+        chipArgs.package = "tq144";
+    }
+
     if (vm.count("lp8k")) {
         chipArgs.type = ArchArgs::LP8K;
         chipArgs.package = "ct256";
@@ -186,6 +191,9 @@ std::unique_ptr<Context> Ice40CommandHandler::createContext(std::unordered_map<s
         if (arch_type == "lp1k") {
             chipArgs.type = ArchArgs::LP1K;
         }
+        if (arch_type == "lp4k") {
+            chipArgs.type = ArchArgs::LP4K;
+        }
         if (arch_type == "lp8k") {
             chipArgs.type = ArchArgs::LP8K;
         }