diff --git a/cmd/jiri/scripts/jiri b/cmd/jiri/scripts/jiri
index 6684669..9834583 100755
--- a/cmd/jiri/scripts/jiri
+++ b/cmd/jiri/scripts/jiri
@@ -57,5 +57,9 @@
   fatal "${JIRI_ROOT}/.jiri_root/bin/jiri is not executable"
 fi
 
+# Add $JIRI_ROOT/.jiri_root/bin to PATH, so that the jiri binary can find the
+# subcommand binaries.
+export PATH="${JIRI_ROOT}/.jiri_root/bin:${PATH}"
+
 # Execute the jiri binary.
 exec "${JIRI_ROOT}/.jiri_root/bin/jiri" "$@"
diff --git a/scripts/jiri b/scripts/jiri
index 6684669..9834583 100755
--- a/scripts/jiri
+++ b/scripts/jiri
@@ -57,5 +57,9 @@
   fatal "${JIRI_ROOT}/.jiri_root/bin/jiri is not executable"
 fi
 
+# Add $JIRI_ROOT/.jiri_root/bin to PATH, so that the jiri binary can find the
+# subcommand binaries.
+export PATH="${JIRI_ROOT}/.jiri_root/bin:${PATH}"
+
 # Execute the jiri binary.
 exec "${JIRI_ROOT}/.jiri_root/bin/jiri" "$@"