diff --git a/srcpkgs/python3-zstandard/template b/srcpkgs/python3-zstandard/template
index aad45b3a808..d59cbb09b96 100644
--- a/srcpkgs/python3-zstandard/template
+++ b/srcpkgs/python3-zstandard/template
@@ -1,7 +1,7 @@
 # Template file for 'python3-zstandard'
 pkgname=python3-zstandard
 version=0.21.0
-revision=2
+revision=3
 build_style=python3-module
 make_build_args="--system-zstd"
 hostmakedepends="python3-setuptools"
diff --git a/srcpkgs/zstd/template b/srcpkgs/zstd/template
index 91e02da24eb..4bbcad3a336 100644
--- a/srcpkgs/zstd/template
+++ b/srcpkgs/zstd/template
@@ -1,4 +1,5 @@
 # Template file for 'zstd'
+# Don't forget to rebuild 'python3-zstandard' which depends on API version.
 pkgname=zstd
 version=1.5.6
 revision=1