diff --git a/Project.toml b/Project.toml
index a172e0d9..06433e6b 100644
--- a/Project.toml
+++ b/Project.toml
@@ -5,6 +5,7 @@ version = "0.5.0"
 
 [deps]
 CUDA = "052768ef-5323-5732-b1bb-66c8b64840ba"
+ExprTools = "e2ba6199-217a-4e67-a87a-7c52f15ade04"
 FiniteDiff = "6a86dc24-6348-571c-b903-95158fe2bd41"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
 IterativeSolvers = "42fd0dbc-a981-5370-80f2-aaf504508153"
@@ -21,6 +22,7 @@ TimerOutputs = "a759f4b9-e2f1-59dc-863e-4aeb61b1ea8f"
 
 [compat]
 CUDA = "^2.0"
+ExprTools = "= 0.1.3"
 FiniteDiff = "2.7"
 ForwardDiff = "0.10"
 IterativeSolvers = "0.8"