diff --git a/CHANGELOG.md b/CHANGELOG.md
index 12bb6c022..e0885b6e6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## Unreleased
+
+**Fixes**:
+- Add missed compile time flag SENTRY_TRANSPORT_COMPRESSION description to the README.md file
+
 ## 0.7.2
 
 **Features**:
diff --git a/README.md b/README.md
index 2577e82c6..e4b533c64 100644
--- a/README.md
+++ b/README.md
@@ -245,6 +245,9 @@ using `cmake -D BUILD_SHARED_LIBS=OFF ..`.
 - `SENTRY_BREAKPAD_SYSTEM` (Default: OFF):
   This instructs the build system to use system-installed breakpad libraries instead of using the in-tree version.
 
+- `SENTRY_TRANSPORT_COMPRESSION` (Default: OFF):
+  Adds Gzip transport compression. Requires `zlib`.
+
 | Feature    | Windows | macOS | Linux | Android | iOS |
 | ---------- | ------- | ----- | ----- | ------- | --- |
 | Transports |         |       |       |         |     |