diff --git a/http/src/lib.rs b/http/src/lib.rs
index 916328829..a731a493c 100644
--- a/http/src/lib.rs
+++ b/http/src/lib.rs
@@ -36,8 +36,6 @@
 
 #![forbid(unsafe_code)]
 
-mod tls;
-
 #[cfg(feature = "runtime")]
 mod builder;
 #[cfg(feature = "runtime")]
@@ -49,6 +47,7 @@ pub mod body;
 pub mod config;
 pub mod error;
 pub mod http;
+pub mod tls;
 pub mod util;
 
 #[cfg(feature = "runtime")]
diff --git a/http/src/tls/error.rs b/http/src/tls/error.rs
index db2f1a2f4..65c3efee0 100644
--- a/http/src/tls/error.rs
+++ b/http/src/tls/error.rs
@@ -10,6 +10,7 @@ pub enum TlsError {
     Rustls(super::rustls::RustlsError),
     #[cfg(feature = "native-tls")]
     NativeTls(super::native_tls::NativeTlsError),
+    OtherTls(Box<dyn error::Error + Send + Sync>),
 }
 
 impl fmt::Debug for TlsError {
@@ -22,6 +23,7 @@ impl fmt::Debug for TlsError {
             Self::Rustls(ref e) => fmt::Debug::fmt(e, _f),
             #[cfg(feature = "native-tls")]
             Self::NativeTls(ref e) => fmt::Debug::fmt(e, _f),
+            Self::OtherTls(ref e) => fmt::Debug::fmt(e, _f),
         }
     }
 }
@@ -36,12 +38,19 @@ impl fmt::Display for TlsError {
             Self::Rustls(ref e) => fmt::Debug::fmt(e, _f),
             #[cfg(feature = "native-tls")]
             Self::NativeTls(ref e) => fmt::Display::fmt(e, _f),
+            Self::OtherTls(ref e) => fmt::Display::fmt(e, _f),
         }
     }
 }
 
 impl error::Error for TlsError {}
 
+impl From<Box<dyn error::Error + Send + Sync>> for TlsError {
+    fn from(e: Box<dyn error::Error + Send + Sync>) -> Self {
+        Self::OtherTls(e)
+    }
+}
+
 impl<S, B> From<TlsError> for HttpServiceError<S, B> {
     fn from(e: TlsError) -> Self {
         Self::Tls(e)