diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog for the Clash project
 
+## 1.4.3 *Aug 8th 2021*
+Fixed:
+
+ * Clash no longer generates calls to `{shift,rotate}_{left,right}` in VHDL where the count is a negative number [#1810](https://github.com/clash-lang/clash-compiler/issues/1810).
+ * Clash no longer incurs unnecessary compile-time complexity while compiling Vector indexing operator [#1557](https://github.com/clash-lang/clash-compiler/issues/1557)
+
 ## 1.4.2 *May 18th 2021*
 Fixed:
 
diff --git a/clash-prelude.cabal b/clash-prelude.cabal
--- a/clash-prelude.cabal
+++ b/clash-prelude.cabal
@@ -1,6 +1,6 @@
 Cabal-version:        2.2
 Name:                 clash-prelude
-Version:              1.4.2
+Version:              1.4.3
 Synopsis:             Clash: a functional hardware description language - Prelude library
 Description:
   Clash is a functional hardware description language that borrows both its
diff --git a/src/Clash/Explicit/Prelude/Safe.hs b/src/Clash/Explicit/Prelude/Safe.hs
--- a/src/Clash/Explicit/Prelude/Safe.hs
+++ b/src/Clash/Explicit/Prelude/Safe.hs
@@ -5,7 +5,7 @@
 License    :  BSD2 (see the file LICENSE)
 Maintainer :  Christiaan Baaij <christiaan.baaij@gmail.com>
 
-__This is the <https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/safe_haskell.html Safe> API only of "Clash.Explicit.Prelude"__
+__This is the <https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/exts/safe_haskell.html Safe> API only of "Clash.Explicit.Prelude"__
 
 This module defines the explicitly clocked counterparts of the functions
 defined in "Clash.Prelude".
diff --git a/src/Clash/Prelude/Safe.hs b/src/Clash/Prelude/Safe.hs
--- a/src/Clash/Prelude/Safe.hs
+++ b/src/Clash/Prelude/Safe.hs
@@ -5,7 +5,7 @@
   License     :  BSD2 (see the file LICENSE)
   Maintainer  :  Christiaan Baaij <christiaan.baaij@gmail.com>
 
-  __This is the <https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/safe_haskell.html Safe> API only of "Clash.Prelude"__
+  __This is the <https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/exts/safe_haskell.html Safe> API only of "Clash.Prelude"__
 
   Clash is a functional hardware description language that borrows both its
   syntax and semantics from the functional programming language Haskell. The
diff --git a/src/Clash/Sized/Internal/BitVector.hs b/src/Clash/Sized/Internal/BitVector.hs
--- a/src/Clash/Sized/Internal/BitVector.hs
+++ b/src/Clash/Sized/Internal/BitVector.hs
@@ -352,8 +352,10 @@
   bitSizeMaybe _    = Just 1
   bitSize _         = 1
   isSigned _        = False
+  shift b i         = if i == 0 then b else low
   shiftL b i        = if i == 0 then b else low
   shiftR b i        = if i == 0 then b else low
+  rotate b _        = b
   rotateL b _       = b
   rotateR b _       = b
   popCount b        = if eq## b low then 0 else 1
diff --git a/src/Clash/Tutorial.hs b/src/Clash/Tutorial.hs
--- a/src/Clash/Tutorial.hs
+++ b/src/Clash/Tutorial.hs
@@ -1656,10 +1656,10 @@
   'Clash.Explicit.Signal.register' clk2 rst2 en2 0 . 'Clash.Explicit.Signal.register' clk2 rst2 en2 0 . 'Clash.Explicit.Signal.unsafeSynchronizer' clk1 clk2
 @
 
-It uses the 'unsafeSynchronizer' primitive, which is needed to go from one clock
+It uses the 'Clash.Explicit.Signal.unsafeSynchronizer' primitive, which is needed to go from one clock
 domain to the other. All synchronizers are specified in terms of
-'unsafeSynchronizer' (see for example the <src/Clash-Prelude-RAM.html#line-103 source of asyncRam>).
-The 'unsafeSynchronizer' primitive is turned into a (bundle of) wire(s) by the
+'Clash.Explicit.Signal.unsafeSynchronizer' (see for example the <src/Clash-Prelude-RAM.html#line-103 source of asyncRam>).
+The 'Clash.Explicit.Signal.unsafeSynchronizer' primitive is turned into a (bundle of) wire(s) by the
 Clash compiler, so developers must ensure that it is only used as part of a
 proper synchronizer.