diff --git a/Cargo.toml b/Cargo.toml
index 655d8c26..176cdd96 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,7 +30,7 @@ group = "0.11"
 halo2 = "0.0"
 lazy_static = "1"
 memuse = { version = "0.2", features = ["nonempty"] }
-pasta_curves = "0.2"
+pasta_curves = "0.2.1"
 proptest = { version = "1.0.0", optional = true }
 rand = "0.8"
 nonempty = "0.7"
@@ -84,6 +84,6 @@ debug = true
 debug = true
 
 [patch.crates-io]
-halo2 = { git = "https://github.com/zcash/halo2.git", rev = "26047eaf323929935fd1e6aa3ae100b1113706e0" }
+halo2 = { git = "https://github.com/zcash/halo2.git", rev = "a7cd600eb60b1528159b92af5e426adcc615de1a" }
 zcash_note_encryption = { git = "https://github.com/zcash/librustzcash.git", rev = "13b023387bafdc7b5712c933dc0e16ee94b96a6a" }
 incrementalmerkletree = { git = "https://github.com/zcash/incrementalmerkletree.git", rev = "b7bd6246122a6e9ace8edb51553fbf5228906cbb" }