diff --git a/.gitignore b/.gitignore
index 80b2d3a..5604d9d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@
 /firefox-78.8.0esr.source.tar.xz
 /firefox-78.9.0esr.source.tar.xz
 /firefox-78.10.0esr.source.tar.xz
+/firefox-78.11.0esr.source.tar.xz
diff --git a/mozjs78.spec b/mozjs78.spec
index 4aa66d8..4f4e06b 100644
--- a/mozjs78.spec
+++ b/mozjs78.spec
@@ -23,7 +23,7 @@
 %endif
 
 Name:           mozjs%{major}
-Version:        78.10.0
+Version:        78.11.0
 Release:        1%{?dist}
 Summary:        SpiderMonkey JavaScript library
 
@@ -272,6 +272,9 @@ PYTHONPATH=tests/lib %{__python3} jit-test/jit_test.py -s -t 1800 --no-progress
 %{_includedir}/mozjs-%{major}/
 
 %changelog
+* Wed Jun 02 2021 Frantisek Zatloukal <fzatlouk@redhat.com> - 78.11.0-1
+- Update to 78.11.0
+
 * Tue Apr 20 2021 Frantisek Zatloukal <fzatlouk@redhat.com> - 78.10.0-1
 - Update to 78.10.0
 
diff --git a/sources b/sources
index 89f0253..3bc8627 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (firefox-78.10.0esr.source.tar.xz) = 5e2cf137dc781855542c29df6152fa74ba749801640ade3cf01487ce993786b87a4f603d25c0af9323e67c7e15c75655523428c1c1426527b8623c7ded9f5946
+SHA512 (firefox-78.11.0esr.source.tar.xz) = d02fc2eda587155b1c54ca12a6c5cde220a29f41f154f1c9b71ae8f966d8cc9439201a5b241e03fc0795b74e2479f7aa5d6b69f70b7639432e5382f321f7a6f4