diff --git a/Cargo.lock b/Cargo.lock
index c38e61f46..c2a4a12b4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2347,7 +2347,6 @@ dependencies = [
  "malachite-bigint",
  "malachite-q",
  "memchr",
- "num-complex",
  "num-traits",
  "once_cell",
  "parking_lot",
@@ -2535,7 +2534,6 @@ dependencies = [
  "system-configuration",
  "tcl",
  "termios",
- "thread_local",
  "tk",
  "ucd",
  "unic-char-property",
diff --git a/common/Cargo.toml b/common/Cargo.toml
index 3ebac23cb..4163a9c28 100644
--- a/common/Cargo.toml
+++ b/common/Cargo.toml
@@ -24,7 +24,6 @@ malachite-bigint = { workspace = true }
 malachite-q = { workspace = true }
 malachite-base = { workspace = true }
 memchr = { workspace = true }
-num-complex = { workspace = true }
 num-traits = { workspace = true }
 once_cell = { workspace = true }
 parking_lot = { workspace = true, optional = true }
diff --git a/pylib/Cargo.toml b/pylib/Cargo.toml
index 64a9da021..dcbb59285 100644
--- a/pylib/Cargo.toml
+++ b/pylib/Cargo.toml
@@ -10,11 +10,11 @@ rust-version.workspace = true
 repository.workspace = true
 
 [features]
-freeze-stdlib = []
+freeze-stdlib = ["dep:rustpython-compiler-core", "dep:rustpython-derive"]
 
 [dependencies]
-rustpython-compiler-core = { workspace = true }
-rustpython-derive = { version = "0.4.0", path = "../derive" }
+rustpython-compiler-core = { workspace = true, optional = true }
+rustpython-derive = { workspace = true, optional = true }
 
 [build-dependencies]
 glob = { workspace = true }
diff --git a/stdlib/Cargo.toml b/stdlib/Cargo.toml
index 14fd0d39e..01ad37165 100644
--- a/stdlib/Cargo.toml
+++ b/stdlib/Cargo.toml
@@ -41,7 +41,6 @@ num-integer = { workspace = true }
 num-traits = { workspace = true }
 num_enum = { workspace = true }
 parking_lot = { workspace = true }
-thread_local = { workspace = true }
 
 memchr = { workspace = true }
 base64 = "0.13.0"