diff --git a/recipes-games/etr/etr/simple-configure.patch b/recipes-games/etr/etr/simple-configure.patch
index fe0233c..5a94835 100644
--- a/recipes-games/etr/etr/simple-configure.patch
+++ b/recipes-games/etr/etr/simple-configure.patch
@@ -1,6 +1,6 @@
-diff -Nurd etr-0.8.0/configure.ac etr-0.8.0/configure.ac
---- etr-0.8.0/configure.ac	2020-03-07 11:14:34.000000000 +0200
-+++ etr-0.8.0/configure.ac	2020-04-08 07:51:25.585431938 +0300
+diff -Nurd etr-0.8.1/configure.ac etr-0.8.1/configure.ac
+--- etr-0.8.1/configure.ac	2021-08-29 05:50:51.338244147 +0300
++++ etr-0.8.1/configure.ac	2021-08-29 05:51:03.434363966 +0300
 @@ -42,33 +42,7 @@
  AC_FUNC_MALLOC
  AC_CHECK_FUNCS([floor getcwd memmove memset mkdir pow sqrt strchr strdup])
@@ -34,5 +34,5 @@ diff -Nurd etr-0.8.0/configure.ac etr-0.8.0/configure.ac
 -[AC_MSG_ERROR([sfml-graphics not found])])
 +LIBS="${LIBS} -lsfml-system -lsfml-audio -lsfml-window -lsfml-graphics"
  
- AC_CHECK_LIB([GL], [glBegin],
+ AC_CHECK_LIB([GLU], [gluBeginCurve],
  [
diff --git a/recipes-games/etr/etr_0.8.0.bb b/recipes-games/etr/etr_0.8.1.bb
similarity index 84%
rename from recipes-games/etr/etr_0.8.0.bb
rename to recipes-games/etr/etr_0.8.1.bb
index 4dee069..c5986ec 100644
--- a/recipes-games/etr/etr_0.8.0.bb
+++ b/recipes-games/etr/etr_0.8.1.bb
@@ -11,7 +11,7 @@ SRC_URI = " \
     file://simple-configure.patch \
 "
 
-SRC_URI[sha256sum] = "4b2899314eda8d0826504ab274acb13ab0dab58b6d0641587749dfa77757da17"
+SRC_URI[sha256sum] = "92da963ed32ab9bff126346edfb9549e871d7c3cec753f4ac5098e0d53c38341"
 
 DEPENDS = "sfml virtual/libgl libglu"