diff --git a/agb-fixnum/Cargo.toml b/agb-fixnum/Cargo.toml
index 9c336d5b..6a03e727 100644
--- a/agb-fixnum/Cargo.toml
+++ b/agb-fixnum/Cargo.toml
@@ -8,13 +8,3 @@ repository = "https://github.com/agbrs/agb"
 
 [dependencies]
 agb_macros = { version = "0.15.0", path = "../agb-macros" }
-
-[profile.dev]
-opt-level = 3
-debug = true
-
-[profile.release]
-opt-level = 3
-lto = "fat"
-debug = true
-codegen-units = 1
diff --git a/agb-gbafix/Cargo.toml b/agb-gbafix/Cargo.toml
index d45294ca..d59144c2 100644
--- a/agb-gbafix/Cargo.toml
+++ b/agb-gbafix/Cargo.toml
@@ -22,4 +22,3 @@ debug = true
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1
diff --git a/agb-hashmap/Cargo.toml b/agb-hashmap/Cargo.toml
index c464959a..8e4790ca 100644
--- a/agb-hashmap/Cargo.toml
+++ b/agb-hashmap/Cargo.toml
@@ -12,13 +12,3 @@ rustc-hash = { version = "1", default-features = false }
 [dev-dependencies]
 rand = { version = "0.8", default-features = false, features = ["small_rng"] }
 lazy_static = "1.4"
-
-[profile.dev]
-opt-level = 3
-debug = true
-
-[profile.release]
-opt-level = 3
-lto = "fat"
-debug = true
-codegen-units = 1
diff --git a/agb-image-converter/Cargo.toml b/agb-image-converter/Cargo.toml
index ea539fcd..8fc7a6bb 100644
--- a/agb-image-converter/Cargo.toml
+++ b/agb-image-converter/Cargo.toml
@@ -17,13 +17,3 @@ proc-macro2 = "1"
 quote = "1"
 asefile = "0.3.5"
 fontdue = "0.7"
-
-[profile.dev]
-opt-level = 3
-debug = true
-
-[profile.release]
-opt-level = 3
-lto = "fat"
-debug = true
-codegen-units = 1
diff --git a/agb-macros/Cargo.toml b/agb-macros/Cargo.toml
index 7db79f00..3312bae9 100644
--- a/agb-macros/Cargo.toml
+++ b/agb-macros/Cargo.toml
@@ -13,14 +13,4 @@ proc-macro = true
 [dependencies]
 syn = { version = "2", features = ["full", "extra-traits"] }
 proc-macro2 = "1"
-quote = "1"
-
-[profile.dev]
-opt-level = 3
-debug = true
-
-[profile.release]
-opt-level = 3
-lto = "fat"
-debug = true
-codegen-units = 1
+quote = "1"
\ No newline at end of file
diff --git a/agb-sound-converter/Cargo.toml b/agb-sound-converter/Cargo.toml
index 992afbb8..6968bd90 100644
--- a/agb-sound-converter/Cargo.toml
+++ b/agb-sound-converter/Cargo.toml
@@ -15,13 +15,3 @@ hound = "3.5"
 syn = "2"
 proc-macro2 = "1"
 quote = "1"
-
-[profile.dev]
-opt-level = 3
-debug = true
-
-[profile.release]
-opt-level = 3
-lto = "fat"
-debug = true
-codegen-units = 1
diff --git a/agb/Cargo.toml b/agb/Cargo.toml
index b2670909..d015d115 100644
--- a/agb/Cargo.toml
+++ b/agb/Cargo.toml
@@ -34,4 +34,3 @@ debug = true
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1
diff --git a/book/games/pong/Cargo.toml b/book/games/pong/Cargo.toml
index 7c0dd1d7..04e26919 100644
--- a/book/games/pong/Cargo.toml
+++ b/book/games/pong/Cargo.toml
@@ -10,10 +10,8 @@ agb = { version = "0.15.0", path = "../../../agb" }
 [profile.dev]
 opt-level = 3
 debug = true
-codegen-units = 1
 
 [profile.release]
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1
diff --git a/examples/amplitude/Cargo.toml b/examples/amplitude/Cargo.toml
index c82c8496..0a6a5d81 100644
--- a/examples/amplitude/Cargo.toml
+++ b/examples/amplitude/Cargo.toml
@@ -12,10 +12,8 @@ agb = { version = "0.15.0", path = "../../agb" }
 [profile.dev]
 opt-level = 2
 debug = true
-codegen-units = 1
 
 [profile.release]
 panic = "abort"
 lto = true
 debug = true
-codegen-units = 1
diff --git a/examples/combo/Cargo.toml b/examples/combo/Cargo.toml
index 2c31266e..419b0f79 100644
--- a/examples/combo/Cargo.toml
+++ b/examples/combo/Cargo.toml
@@ -15,10 +15,8 @@ amplitude = { path = "../amplitude" }
 [profile.dev]
 opt-level = 3
 debug = true
-codegen-units = 1
 
 [profile.release]
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1
diff --git a/examples/hyperspace-roll/Cargo.toml b/examples/hyperspace-roll/Cargo.toml
index 5557b1a3..df69b370 100644
--- a/examples/hyperspace-roll/Cargo.toml
+++ b/examples/hyperspace-roll/Cargo.toml
@@ -10,10 +10,8 @@ agb = { version = "0.15.0", path = "../../agb" }
 [profile.dev]
 opt-level = 3
 debug = true
-codegen-units = 1
 
 [profile.release]
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1
diff --git a/examples/the-hat-chooses-the-wizard/Cargo.toml b/examples/the-hat-chooses-the-wizard/Cargo.toml
index 18bc73b0..78a4a8e8 100644
--- a/examples/the-hat-chooses-the-wizard/Cargo.toml
+++ b/examples/the-hat-chooses-the-wizard/Cargo.toml
@@ -16,10 +16,8 @@ serde_json = "1.0"
 [profile.dev]
 opt-level = 3
 debug = true
-codegen-units = 1
 
 [profile.release]
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1
diff --git a/examples/the-purple-night/Cargo.toml b/examples/the-purple-night/Cargo.toml
index 0b77cded..77ef7d19 100644
--- a/examples/the-purple-night/Cargo.toml
+++ b/examples/the-purple-night/Cargo.toml
@@ -17,10 +17,8 @@ tiled = { version = "0.9.4", default-features = false }
 [profile.dev]
 opt-level = 3
 debug = true
-codegen-units = 1
 
 [profile.release]
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1
diff --git a/mgba-test-runner/Cargo.toml b/mgba-test-runner/Cargo.toml
index 58e7839b..4649d2f3 100644
--- a/mgba-test-runner/Cargo.toml
+++ b/mgba-test-runner/Cargo.toml
@@ -11,13 +11,3 @@ image = { version = "0.24", default-features = false, features = [ "png", "bmp"
 
 [build-dependencies]
 cc = { version = "1", features = ["parallel"] }
-
-[profile.dev]
-opt-level = 3
-debug = true
-
-[profile.release]
-opt-level = 3
-lto = "fat"
-debug = true
-codegen-units = 1
\ No newline at end of file
diff --git a/template/Cargo.toml b/template/Cargo.toml
index 3cd11cb2..bbd035cf 100644
--- a/template/Cargo.toml
+++ b/template/Cargo.toml
@@ -12,10 +12,8 @@ agb = "0.15.0"
 [profile.dev]
 opt-level = 3
 debug = true
-codegen-units = 1
 
 [profile.release]
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1
diff --git a/tools/Cargo.toml b/tools/Cargo.toml
index bd6f8ee5..349d7d26 100644
--- a/tools/Cargo.toml
+++ b/tools/Cargo.toml
@@ -9,13 +9,3 @@ toml_edit = "0.19"
 glob = "0.3"
 chrono = "0.4"
 dependency-graph = "0.1.5"
-
-[profile.dev]
-opt-level = 3
-debug = true
-
-[profile.release]
-opt-level = 3
-lto = "fat"
-debug = true
-codegen-units = 1
\ No newline at end of file