diff --git a/bitcoin/Cargo.toml b/bitcoin/Cargo.toml
index 9b671e0a..5ef9d0e3 100644
--- a/bitcoin/Cargo.toml
+++ b/bitcoin/Cargo.toml
@@ -9,7 +9,7 @@ documentation = "https://docs.rs/bitcoin/"
 description = "General purpose library for using and interoperating with Bitcoin and other cryptocurrencies."
 keywords = [ "crypto", "bitcoin" ]
 readme = "README.md"
-exclude = ["tests/"]
+exclude = ["tests", "contrib"]
 edition = "2018"
 
 # Please don't forget to add relevant features to docs.rs below
diff --git a/hashes/Cargo.toml b/hashes/Cargo.toml
index 8734dd0c..aef9ce6d 100644
--- a/hashes/Cargo.toml
+++ b/hashes/Cargo.toml
@@ -10,6 +10,7 @@ documentation = "https://docs.rs/bitcoin_hashes/"
 keywords = [ "crypto", "bitcoin", "hash", "digest" ]
 readme = "README.md"
 edition = "2018"
+exclude = ["tests", "contrib"]
 
 [features]
 default = ["std"]
diff --git a/internals/Cargo.toml b/internals/Cargo.toml
index a5b9d7ab..c19d9f1b 100644
--- a/internals/Cargo.toml
+++ b/internals/Cargo.toml
@@ -10,6 +10,7 @@ categories = ["cryptography::cryptocurrencies"]
 keywords = ["internal"]
 readme = "README.md"
 edition = "2018"
+exclude = ["tests", "contrib"]
 
 # Please don't forget to add relevant features to docs.rs below.
 [features]