diff --git a/README.md b/README.md
index ab7c76f..163f509 100644
--- a/README.md
+++ b/README.md
@@ -357,7 +357,7 @@ header files to use with documentation:<br />
 ### References:
 
 * **Benchmark references:**
-  * <a name="FastPFor"></a>[FastPFor](https://github.com/lemire/FastPFor) + [Simdcomp](https://github.com/lemire/simdcomp): SIMDPack FPF, Vbyte FPF, VarintG8IU, StreamVbyte
+  * <a name="FastPFor"></a>[FastPFor](https://github.com/lemire/FastPFor) + [Simdcomp](https://github.com/lemire/simdcomp): SIMDPack FPF, Vbyte FPF, VarintG8IU, StreamVbyte, GroupSimple
   * <a name="OptPFD"></a><a name="Simple16"></a>[Optimized Pfor-delta compression code](http://jinruhe.com): OptPFD/OptP4, Simple16 (limited to 28 bits integers)
   * <a name="MaskedVByte"></a>[MaskedVByte](http://maskedvbyte.org/). See also: [Vectorized VByte Decoding](http://engineering.indeed.com/blog/2015/03/vectorized-vbyte-decoding-high-performance-vector-instructions/)
   * <a name="Streamvbyte"></a>[Streamvbyte](https://github.com/lemire/streamvbyte).