diff --git a/README.md b/README.md
index 8efd855..4f62410 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 This forest is initialized with the following command:
 
 ```bash
-brew install opam bubblewrap fswatch
+brew install opam bubblewrap watchexec
 opam init --auto-setup --yes
 opam update --yes
 opam install forester --yes
diff --git a/build_changed.sh b/build_changed.sh
new file mode 100755
index 0000000..72a578e
--- /dev/null
+++ b/build_changed.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+while IFS= read -r line; do
+    # IFS=':' read -ra ADDR <<< "$line"
+    # echo "File ${ADDR[0]} changed"
+    # if line begins with "other:"
+    # if [[ $line == other:* ]]; then
+    #     # echo "Other event: $line"
+    #     continue
+    # fi
+
+    echo "Event: $line"
+    ./build.sh
+done
\ No newline at end of file
diff --git a/trees/hopf-0004.tree b/trees/hopf-0004.tree
index 2d0a4f2..1ed26a2 100644
--- a/trees/hopf-0004.tree
+++ b/trees/hopf-0004.tree
@@ -10,4 +10,3 @@ A standard Peano space is a Peano space over the linear space #{V} of dimension
 
 \p{In such a space the length of the bracket, i.e. the number of entries, equals the dimension of the space, and conversely. We will be concerned here with standard Peano spaces only.
 }}
-
diff --git a/watch.sh b/watch.sh
index a2670e0..fc3c3ef 100755
--- a/watch.sh
+++ b/watch.sh
@@ -4,9 +4,5 @@ rm -rf build
 rm -rf output
 ./build.sh
 
-# -l 200
-fswatch -r -o trees assets | while read num ; \
-  do \
-    ./build.sh 2>&1|grep -v "texmf-dist"
-    echo "#$num"
-  done
+watchexec --no-vcs-ignore --project-origin . --on-busy-update queue --poll 500ms -e tree,tex,css,js,xsl -w trees -w assets --emit-events-to=stdio -- ./build_changed.sh
+
diff --git a/watch_tree.sh b/watch_tree.sh
deleted file mode 100755
index 129d662..0000000
--- a/watch_tree.sh
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/bin/bash
-
-rm -rf build
-rm -rf output
-./build.sh
-
-# -l 200
-fswatch -r -o trees | while read num ; \
-  do \
-    ./build.sh 2>&1|grep -v "texmf-dist"
-  done