diff --git a/games/srb2/srb2.SlackBuild b/games/srb2/srb2.SlackBuild
index 526ac57f9a..455415a23d 100644
--- a/games/srb2/srb2.SlackBuild
+++ b/games/srb2/srb2.SlackBuild
@@ -6,6 +6,7 @@
 
 # Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.
 
+# 20240907 bkw: updated for v2.2.13.
 # 20230714 bkw: updated for v2.2.11.
 # - new deps (see .info file).
 # - cmake sed stuff to allow building without net access.
@@ -14,7 +15,7 @@
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=srb2
-VERSION=${VERSION:-2.2.11}
+VERSION=${VERSION:-2.2.13}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
@@ -102,6 +103,10 @@ sed -i 's,usr/games,usr/share/games,g' \
 # on Linux as well. So:
 sed -i '/CMAKE_HOST_SYSTEM_NAME/s,STREQ.*,MATCHES Linux),' CMakeLists.txt
 
+# 20240907 bkw: -DSRB2_CONFIG_SYSTEM_LIBRARIES=ON doesn't affect libgme,
+# there's no way to use the system libgme without this...
+sed -i '/cpm-libgme/d' thirdparty/CMakeLists.txt
+
 mkdir -p build
 cd build
   cmake \
@@ -111,6 +116,9 @@ cd build
     -DLIB_SUFFIX=${LIBDIRSUFFIX} \
     -DMAN_INSTALL_DIR=/usr/man \
     -DUSE_CCACHE=ON \
+    -DSRB2_CONFIG_ENABLE_TESTS=OFF \
+    -DSRB2_CONFIG_SYSTEM_LIBRARIES=ON \
+    -DSRB2_SDL2_EXE_NAME=lsdl$PRGNAM \
     -DCMAKE_BUILD_TYPE=Release ..
   make VERBOSE=1
   #make install/strip DESTDIR=$PKG # don't bother, it's broken
diff --git a/games/srb2/srb2.info b/games/srb2/srb2.info
index 4fc21718b3..b0108ddcda 100644
--- a/games/srb2/srb2.info
+++ b/games/srb2/srb2.info
@@ -1,10 +1,10 @@
 PRGNAM="srb2"
-VERSION="2.2.11"
+VERSION="2.2.13"
 HOMEPAGE="https://www.srb2.org/"
-DOWNLOAD="https://github.com/STJr/SRB2/archive/SRB2_release_2.2.11/SRB2-SRB2_release_2.2.11.tar.gz \
-          https://github.com/STJr/SRB2/releases/download/SRB2_release_2.2.11/SRB2-v2211-Full.zip"
-MD5SUM="bcb3493b8668dadd8f9bfb10d3325fd6 \
-        d356b7e3db4520355b142b39c51cc8a8"
+DOWNLOAD="https://github.com/STJr/SRB2/archive/SRB2_release_2.2.13/SRB2-SRB2_release_2.2.13.tar.gz \
+          https://github.com/STJr/SRB2/releases/download/SRB2_release_2.2.13/SRB2-v2213-Full.zip"
+MD5SUM="0af8d9629a8d14b2638db0e2caede142 \
+        61521518534a1c4ee37e2985817bc37b"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
 REQUIRES="libgme libopenmpt"