diff --git a/ports/libSDL/libSDL.port b/ports/libSDL/libSDL.port
index 97b66083..1d56977a 100644
--- a/ports/libSDL/libSDL.port
+++ b/ports/libSDL/libSDL.port
@@ -8,6 +8,7 @@ SHA256SUM=09e4215a0f8ecad45a36aee04f97bfb662cf9578e3bee55dbd3750a9dd021b12
 UPSTREAM_SITE=https://pub.sortix.org/fork/libSDL
 UPSTREAM_ARCHIVE=$ARCHIVE
 BUILD_SYSTEM=configure
+LICENSE=LGPL-2.1-or-later
 CONFIGURE_ARGS='--without-x --disable-pulseaudio --enable-video-dispd --disable-pthreads'
 MAKE=./make.sortix
 POST_INSTALL=tix-eradicate-libtool-la
diff --git a/ports/libjpeg/libjpeg.port b/ports/libjpeg/libjpeg.port
index 3ffe12c5..1e76daa0 100644
--- a/ports/libjpeg/libjpeg.port
+++ b/ports/libjpeg/libjpeg.port
@@ -8,6 +8,7 @@ SHA256SUM=4077d6a6a75aeb01884f708919d25934c93305e49f7e3f36db9129320e6f4f3d
 UPSTREAM_SITE=https://ijg.org/files
 UPSTREAM_ARCHIVE=$ARCHIVE
 BUILD_SYSTEM=configure
+LICENSE=IJG
 # TODO: Curiously, the programs shipped with libjpeg have the target name prefixed.
 CONFIGURE_ARGS='--program-prefix='
 MAKE_VARS='V=1'
diff --git a/ports/libtheora/libtheora.port b/ports/libtheora/libtheora.port
index ed9cda47..b98f54e4 100644
--- a/ports/libtheora/libtheora.port
+++ b/ports/libtheora/libtheora.port
@@ -7,6 +7,7 @@ ARCHIVE=$DISTNAME.$COMPRESSION
 SHA256SUM=b6ae1ee2fa3d42ac489287d3ec34c5885730b1296f0801ae577a35193d3affbc
 UPSTREAM_SITE=https://ftp.osuosl.org/pub/xiph/releases/theora
 UPSTREAM_ARCHIVE=$ARCHIVE
+LICENSE=BSD-3-Clause
 BUILD_SYSTEM=configure
 # TODO: This package runs cross-compiled programs when generating documentation:
 CONFIGURE_ARGS=--disable-spec