diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,7 @@
 # Revision history for stp
 
+## 0.1.0.1 -- 2018-11-21
+* Second release, fixes build issue.
+
 ## 0.1.0.0 -- 2018-11-20
 * First version.
diff --git a/stp.cabal b/stp.cabal
--- a/stp.cabal
+++ b/stp.cabal
@@ -1,5 +1,5 @@
 name:                stp
-version:             0.1.0.0
+version:             0.1.0.1
 synopsis:            Simple Theorem Prover
 copyright:           (c) 2018 Boro Sitnikovski
 homepage:            https://github.com/bor0/stp
@@ -26,19 +26,19 @@
 
 source-repository this
     type: git
-    tag: 0.1.0.0
+    tag: 0.1.0.1
     location: https://github.com/bor0/stp
 
 library
     exposed-modules:     SimpleTheoremProver
-    build-depends:       base >=4.11 && <4.12
+    build-depends:       base >=4 && <5
                          , containers ==0.5.11.0
     hs-source-dirs:      src
     default-language:    Haskell2010
 
 executable mu-test
     main-is:             MU.hs
-    build-depends:       base >=4.11 && <4.12
+    build-depends:       base >=4 && <5
                          , regex-compat ==0.95.1
                          , stp
     hs-source-dirs:      example