diff --git a/HsOpenSSL.cabal b/HsOpenSSL.cabal
index a11daad..e6bf9fc 100644
--- a/HsOpenSSL.cabal
+++ b/HsOpenSSL.cabal
@@ -74,7 +74,7 @@ Custom-setup
 Library
     Build-Depends:
         base       >= 4.8 && < 5,
-        bytestring >= 0.9 && < 0.12,
+        bytestring >= 0.9 && < 0.13,
         network    >= 2.1 && < 3.2,
         time       >= 1.5 && < 1.13
 
@@ -163,7 +163,7 @@ Test-Suite test-dsa
     Build-Depends:
         HsOpenSSL,
         base                 >= 4.8 && < 5,
-        bytestring           >= 0.9 && < 0.12
+        bytestring           >= 0.9 && < 0.13
     Default-Language:
         Haskell2010
     GHC-Options:
@@ -190,7 +190,7 @@ Test-Suite test-evp-base64
     Build-Depends:
         HsOpenSSL,
         base                 >= 4.8 && < 5,
-        bytestring           >= 0.9 && < 0.12
+        bytestring           >= 0.9 && < 0.13
     Default-Language:
         Haskell2010
     GHC-Options:
@@ -204,7 +204,7 @@ Test-Suite test-evp-digest
     Build-Depends:
         HsOpenSSL,
         base                 >= 4.8 && < 5,
-        bytestring           >= 0.9 && < 0.12
+        bytestring           >= 0.9 && < 0.13
     Default-Language:
         Haskell2010
     GHC-Options: