diff --git a/kmod/src/Makefile b/kmod/src/Makefile
index 7fd73191..c6741f6d 100644
--- a/kmod/src/Makefile
+++ b/kmod/src/Makefile
@@ -61,11 +61,11 @@ scoutfs-y +=			\
 #
 .PHONY: $(src)/check_exported_types
 $(src)/check_exported_types:
-	@if egrep '\<[us](8|16|32|64\>)' $(src)/format.h $(src)/ioctl.h; then \
+	@if grep -E '\<[us](8|16|32|64\>)' $(src)/format.h $(src)/ioctl.h; then \
 		echo "no raw types in exported headers, preface with __";     \
 		exit 1;							      \
 	fi
-	@if egrep '\<__packed\>' $(src)/format.h $(src)/ioctl.h; then \
+	@if grep -E '\<__packed\>' $(src)/format.h $(src)/ioctl.h; then \
 		echo "no __packed allowed in exported headers";     \
 		exit 1;							      \
 	fi
diff --git a/tests/funcs/filter.sh b/tests/funcs/filter.sh
index 831702e3..0a7ac6b2 100644
--- a/tests/funcs/filter.sh
+++ b/tests/funcs/filter.sh
@@ -236,7 +236,7 @@ t_filter_dmesg()
 	re="$re|File: /mnt/test.* PID:.* Comm: dd"
 	re="$re|dio_warn_stale_pagecache*"
 
-	egrep -v "($re)" | \
+	grep -v -E "($re)" | \
 		ignore_harmless_unwind_kasan_stack_oob | \
 		ignore_harmless_xfs_lockdep_warning
 }
diff --git a/utils/sparse.sh b/utils/sparse.sh
index adef573b..a31b3630 100755
--- a/utils/sparse.sh
+++ b/utils/sparse.sh
@@ -71,7 +71,7 @@ else
 	m64=""
 fi
 
-sparse $m64 $include $search/include "$@" 2>&1 | egrep -v "($RE)" | tee .sparse.output
+sparse $m64 $include $search/include "$@" 2>&1 | grep -v -E "($RE)" | tee .sparse.output
 
 rm -f $defines