diff --git a/MozillaFirefox.changes b/MozillaFirefox.changes
index acf55067..7bc26e8e 100644
--- a/MozillaFirefox.changes
+++ b/MozillaFirefox.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Fri May 10 10:30:05 UTC 2019 - Manfred Hollstein <manfred.h@gmx.net>
+
+- Mozilla Firefox 66.0.5
+  * Fixed: Further improvements to re-enable web extensions which
+    had been disabled for users with a master password set (bmo#1549249)
+
 -------------------------------------------------------------------
 Sun May  5 20:21:02 UTC 2019 - Wolfgang Rosenauer <wr@rosenauer.org>
 
diff --git a/MozillaFirefox.spec b/MozillaFirefox.spec
index 06fb12d6..8a85804a 100644
--- a/MozillaFirefox.spec
+++ b/MozillaFirefox.spec
@@ -19,12 +19,12 @@
 
 # changed with every update
 %define major          66
-%define mainver        %major.0.4
-%define orig_version   66.0.4
+%define mainver        %major.0.5
+%define orig_version   66.0.5
 %define orig_suffix    %{nil}
 %define update_channel release
 %define branding       1
-%define releasedate    20190504212614
+%define releasedate    20190507012018
 %define source_prefix  firefox-%{orig_version}
 
 # always build with GCC as SUSE Security Team requires that
diff --git a/compare-locales.tar.xz b/compare-locales.tar.xz
index c5768da2..6f334709 100644
--- a/compare-locales.tar.xz
+++ b/compare-locales.tar.xz
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:8bf70f4482a0bb30fa4751758682f6f805942e98378a2dedce999a8e02896342
-size 28384
+oid sha256:39b8275de1d7cf4720ea37c183581eec2a610778d01a92c2b4a58ffc71447343
+size 28528
diff --git a/create-tar.sh b/create-tar.sh
index 9323cf3f..e671e252 100644
--- a/create-tar.sh
+++ b/create-tar.sh
@@ -7,8 +7,8 @@
 
 CHANNEL="release"
 BRANCH="releases/mozilla-$CHANNEL"
-RELEASE_TAG="848b15028562c6757748070f637e0e4f0bbb5f65"
-VERSION="66.0.4"
+RELEASE_TAG="96d2576eae4baf0aa961b4f5a1dadd26bb8ee823"
+VERSION="66.0.5"
 VERSION_SUFFIX=""
 LOCALE_FILE="firefox-$VERSION/browser/locales/l10n-changesets.json"
 
diff --git a/firefox-66.0.4.source.tar.xz b/firefox-66.0.4.source.tar.xz
deleted file mode 100644
index 616aeba7..00000000
--- a/firefox-66.0.4.source.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:7ac6fae17e402276483fbfbb6b320d61e6695a28f1112ba2c987127f105dc25d
-size 283007704
diff --git a/firefox-66.0.4.source.tar.xz.asc b/firefox-66.0.4.source.tar.xz.asc
deleted file mode 100644
index d265b475..00000000
--- a/firefox-66.0.4.source.tar.xz.asc
+++ /dev/null
@@ -1,17 +0,0 @@
------BEGIN PGP SIGNATURE-----
-Version: GnuPG v2.0.14 (GNU/Linux)
-
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-u5rpZ14hVyys7d7OUIzh
-=Z/o7
------END PGP SIGNATURE-----
diff --git a/firefox-66.0.5.source.tar.xz b/firefox-66.0.5.source.tar.xz
new file mode 100644
index 00000000..d29dd37e
--- /dev/null
+++ b/firefox-66.0.5.source.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a2aeb4e036d1365a2d2550e24ba8b4dde061281300f2b11a204cc1e9eb1792b5
+size 282561836
diff --git a/firefox-66.0.5.source.tar.xz.asc b/firefox-66.0.5.source.tar.xz.asc
new file mode 100644
index 00000000..118a01af
--- /dev/null
+++ b/firefox-66.0.5.source.tar.xz.asc
@@ -0,0 +1,17 @@
+-----BEGIN PGP SIGNATURE-----
+Version: GnuPG v2.0.14 (GNU/Linux)
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+8r2Jo2OEcKL2TZnr7hjo
+=Yxmu
+-----END PGP SIGNATURE-----
diff --git a/l10n-66.0.4.tar.xz b/l10n-66.0.4.tar.xz
deleted file mode 100644
index 0b600424..00000000
--- a/l10n-66.0.4.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:b2b83f03fd2ead3e72357c93dc0575ea33591a3c9aefbee9a74b752d62f3f6a0
-size 50150940
diff --git a/l10n-66.0.5.tar.xz b/l10n-66.0.5.tar.xz
new file mode 100644
index 00000000..c5902baf
--- /dev/null
+++ b/l10n-66.0.5.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ffd35011f8e796d5e29a0459d51bbdc7c08f7bcee8e3a706a57d6e5d1a89b7bf
+size 48696164
diff --git a/source-stamp.txt b/source-stamp.txt
index f52aa5cb..d8b229ce 100644
--- a/source-stamp.txt
+++ b/source-stamp.txt
@@ -1,2 +1,2 @@
-REV=848b15028562
+REV=96d2576eae4b
 REPO=http://hg.mozilla.org/releases/mozilla-release