diff --git a/techlibs/greenpak4/cells_sim.v b/techlibs/greenpak4/cells_sim.v
index 1b3a6603..a59d1715 100644
--- a/techlibs/greenpak4/cells_sim.v
+++ b/techlibs/greenpak4/cells_sim.v
@@ -240,6 +240,24 @@ module GP_DFFSRI(input D, CLK, nSR, output reg nQ);
 	end
 endmodule
 
+module GP_DLATCH(input D, input nCLK, output reg Q);
+	parameter [0:0] INIT = 1'bx;
+	initial Q = INIT;
+	always @(*) begin
+		if(!nCLK)
+			Q <= D;
+	end
+endmodule
+
+module GP_DLATCHI(input D, input nCLK, output reg Q);
+	parameter [0:0] INIT = 1'bx;
+	initial Q = INIT;
+	always @(*) begin
+		if(!nCLK)
+			Q <= ~D;
+	end
+endmodule
+
 module GP_DLATCHR(input D, input nCLK, input nRST, output reg Q);
 	parameter [0:0] INIT = 1'bx;
 	initial Q = INIT;