diff --git a/pkg/heatshrink/doc.txt b/pkg/heatshrink/doc.txt
index bc47fed92f..bca3767cb3 100644
--- a/pkg/heatshrink/doc.txt
+++ b/pkg/heatshrink/doc.txt
@@ -1,7 +1,7 @@
 /**
  * @defgroup pkg_heatshrink   Lightweight compression library
  * @ingroup  pkg
- * @ingroup  sys
+ * @ingroup  sys_compression
  * @brief    Provides a lightweight compression library to RIOT
  *
  * # Introduction
diff --git a/pkg/lz4/doc.txt b/pkg/lz4/doc.txt
index ed091e8b9a..6bc1fbf2e3 100644
--- a/pkg/lz4/doc.txt
+++ b/pkg/lz4/doc.txt
@@ -1,6 +1,7 @@
 /**
  * @defgroup pkg_lz4   LZ4 compression library
  * @ingroup  pkg
+ * @ingroup  sys_compression
  * @brief    LZ4 is a fast compression library
  *
  * # Note about memory
diff --git a/pkg/uzlib/doc.txt b/pkg/uzlib/doc.txt
index 5a33e034a6..06bf3e9da7 100644
--- a/pkg/uzlib/doc.txt
+++ b/pkg/uzlib/doc.txt
@@ -1,6 +1,7 @@
 /**
  * @defgroup pkg_uzlib   uzlib
  * @ingroup  pkg
+ * @ingroup  sys_compression
  * @brief    Deflate/Zlib-compatible LZ77 compression/decompression library
  *
  * # License
diff --git a/sys/doc.txt b/sys/doc.txt
index 2ccd382718..c535321cf8 100644
--- a/sys/doc.txt
+++ b/sys/doc.txt
@@ -23,6 +23,12 @@
  * description.
  */
 
+/**
+ * @defgroup    sys_compression Data Compression Libraries
+ * @ingroup     sys
+ * @brief       Provides compression libraries and utilities for RIOT
+ */
+
 /**
  * @defgroup    sys_math Math libraries and utilities
  * @ingroup     sys