diff --git a/build-an-anchor-leaderboard/rock-destroyer/programs/rock-destroyer/Cargo.toml b/build-an-anchor-leaderboard/rock-destroyer/programs/rock-destroyer/Cargo.toml
index f223cbfe..3c7bdb56 100644
--- a/build-an-anchor-leaderboard/rock-destroyer/programs/rock-destroyer/Cargo.toml
+++ b/build-an-anchor-leaderboard/rock-destroyer/programs/rock-destroyer/Cargo.toml
@@ -16,4 +16,4 @@ cpi = ["no-entrypoint"]
 default = []
 
 [dependencies]
-anchor-lang = "0.27.0"
+anchor-lang = "0.30.0"
diff --git a/learn-anchor-by-building-tic-tac-toe-part-2/tic-tac-toe/programs/tic-tac-toe/Cargo.toml b/learn-anchor-by-building-tic-tac-toe-part-2/tic-tac-toe/programs/tic-tac-toe/Cargo.toml
index a0a8a491..70992262 100644
--- a/learn-anchor-by-building-tic-tac-toe-part-2/tic-tac-toe/programs/tic-tac-toe/Cargo.toml
+++ b/learn-anchor-by-building-tic-tac-toe-part-2/tic-tac-toe/programs/tic-tac-toe/Cargo.toml
@@ -16,6 +16,6 @@ cpi = ["no-entrypoint"]
 default = []
 
 [dependencies]
-anchor-lang = "0.27.0"
+anchor-lang = "0.30.0"
 num-traits = "0.2"
 num-derive = "0.3"
diff --git a/learn-how-to-build-a-client-side-app-part-1/tic-tac-toe/programs/tic-tac-toe/Cargo.toml b/learn-how-to-build-a-client-side-app-part-1/tic-tac-toe/programs/tic-tac-toe/Cargo.toml
index 37632c1d..70992262 100644
--- a/learn-how-to-build-a-client-side-app-part-1/tic-tac-toe/programs/tic-tac-toe/Cargo.toml
+++ b/learn-how-to-build-a-client-side-app-part-1/tic-tac-toe/programs/tic-tac-toe/Cargo.toml
@@ -16,6 +16,6 @@ cpi = ["no-entrypoint"]
 default = []
 
 [dependencies]
-anchor-lang = "0.28.0"
+anchor-lang = "0.30.0"
 num-traits = "0.2"
 num-derive = "0.3"
diff --git a/learn-how-to-build-for-mainnet/_answer/programs/todo/Cargo.toml b/learn-how-to-build-for-mainnet/_answer/programs/todo/Cargo.toml
index 0598a943..c7c614be 100644
--- a/learn-how-to-build-for-mainnet/_answer/programs/todo/Cargo.toml
+++ b/learn-how-to-build-for-mainnet/_answer/programs/todo/Cargo.toml
@@ -16,4 +16,4 @@ cpi = ["no-entrypoint"]
 default = []
 
 [dependencies]
-anchor-lang = { version = "0.28.0", features = ["init-if-needed"] }
+anchor-lang = { version = "0.30.0", features = ["init-if-needed"] }
diff --git a/learn-how-to-build-for-mainnet/todo/programs/todo/Cargo.toml b/learn-how-to-build-for-mainnet/todo/programs/todo/Cargo.toml
index ca3f8d5a..b14cf244 100644
--- a/learn-how-to-build-for-mainnet/todo/programs/todo/Cargo.toml
+++ b/learn-how-to-build-for-mainnet/todo/programs/todo/Cargo.toml
@@ -16,4 +16,4 @@ cpi = ["no-entrypoint"]
 default = []
 
 [dependencies]
-anchor-lang = { version = "0.28.0", features = [] }
+anchor-lang = { version = "0.30.0", features = [] }
diff --git a/learn-how-to-deploy-to-devnet/todo/programs/todo/Cargo.toml b/learn-how-to-deploy-to-devnet/todo/programs/todo/Cargo.toml
index 0598a943..c7c614be 100644
--- a/learn-how-to-deploy-to-devnet/todo/programs/todo/Cargo.toml
+++ b/learn-how-to-deploy-to-devnet/todo/programs/todo/Cargo.toml
@@ -16,4 +16,4 @@ cpi = ["no-entrypoint"]
 default = []
 
 [dependencies]
-anchor-lang = { version = "0.28.0", features = ["init-if-needed"] }
+anchor-lang = { version = "0.30.0", features = ["init-if-needed"] }