diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,8 @@
 # openssl-streams changelog #
 
+## 1.2.1.3
+  - Bugfix: test target didn't allow `io-streams` 1.5.
+  
 ## 1.2.1.2
   - Allow `io-streams` 1.5.
 
diff --git a/openssl-streams.cabal b/openssl-streams.cabal
--- a/openssl-streams.cabal
+++ b/openssl-streams.cabal
@@ -1,5 +1,5 @@
 Name:                openssl-streams
-Version:             1.2.1.2
+Version:             1.2.1.3
 License:             BSD3
 License-file:        LICENSE
 Category:            Network, IO-Streams
@@ -50,7 +50,7 @@
   Build-depends:     base                 >= 4       && <5,
                      bytestring           >= 0.9.2   && <0.11,
                      HsOpenSSL            >= 0.10.3  && <0.12,
-                     io-streams           >= 1.0     && <1.5,
+                     io-streams           >= 1.0     && <1.6,
                      network              >= 2.3     && <2.7,
                      -- test deps follow.
                      HUnit                >= 1.2     && <2,