diff --git a/linux/build/build b/linux/build/build
index 077c567..003a608 100755
--- a/linux/build/build
+++ b/linux/build/build
@@ -12,7 +12,7 @@ cd $dir
 
 arch=$(uname -m)
 language=$(echo $LANG | cut -c-5 | sed s/_/-/g)
-version="91.9.1esr"
+version="91.11.0esr"
 application="firefox"
 ftpmirror="https://ftp.mozilla.org/pub/$application/releases/$version"
 
diff --git a/linux/build/profile/cert9.db b/linux/build/profile/cert9.db
index bcc5421..f5ccea3 100644
Binary files a/linux/build/profile/cert9.db and b/linux/build/profile/cert9.db differ
diff --git a/linux/build/profile/certificates/purplei2p_ca.pem b/linux/build/profile/certificates/purplei2p_ca.pem
index bbbcc77..a750237 100644
--- a/linux/build/profile/certificates/purplei2p_ca.pem
+++ b/linux/build/profile/certificates/purplei2p_ca.pem
@@ -1,23 +1,24 @@
 -----BEGIN CERTIFICATE-----
-MIID7DCCAtSgAwIBAgIJAKXaTovgoTIUMA0GCSqGSIb3DQEBCwUAMIGCMQswCQYD
-VQQGEwJXVzEUMBIGA1UECAwLSTJQIE5ldHdvcmsxEjAQBgNVBAoMCVB1cnBsZUky
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-MzA4MjMyMTQ3NTJaMIGCMQswCQYDVQQGEwJXVzEUMBIGA1UECAwLSTJQIE5ldHdv
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+EVNoSbqid1fAVyA=
 -----END CERTIFICATE-----
diff --git a/macos/build/build b/macos/build/build
index 860c2fe..91e6292 100755
--- a/macos/build/build
+++ b/macos/build/build
@@ -12,7 +12,7 @@ cd $dir
 
 arch=$(uname -m)
 language=$(osascript -e 'user locale of (get system info)' | sed -e 's/_/-/g')
-version="91.9.1esr"
+version="91.11.0esr"
 i2pdversion="2.42.1"
 
 ftpmirror="https://ftp.mozilla.org/pub/firefox/releases/${version}"
diff --git a/macos/build/profile/cert9.db b/macos/build/profile/cert9.db
index bcc5421..f5ccea3 100644
Binary files a/macos/build/profile/cert9.db and b/macos/build/profile/cert9.db differ
diff --git a/macos/build/profile/certificates/purplei2p_ca.pem b/macos/build/profile/certificates/purplei2p_ca.pem
index bbbcc77..a750237 100644
--- a/macos/build/profile/certificates/purplei2p_ca.pem
+++ b/macos/build/profile/certificates/purplei2p_ca.pem
@@ -1,23 +1,24 @@
 -----BEGIN CERTIFICATE-----
-MIID7DCCAtSgAwIBAgIJAKXaTovgoTIUMA0GCSqGSIb3DQEBCwUAMIGCMQswCQYD
-VQQGEwJXVzEUMBIGA1UECAwLSTJQIE5ldHdvcmsxEjAQBgNVBAoMCVB1cnBsZUky
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+EVNoSbqid1fAVyA=
 -----END CERTIFICATE-----
diff --git a/windows/build/build.cmd b/windows/build/build.cmd
index a49de05..cab5834 100644
--- a/windows/build/build.cmd
+++ b/windows/build/build.cmd
@@ -7,7 +7,7 @@ REM See full license text in LICENSE file at top of project tree
 setlocal enableextensions
 
 set CURL=%~dp0curl.exe
-set FFversion=91.9.1esr
+set FFversion=91.11.0esr
 set I2Pdversion=2.42.1
 call :GET_LOCALE
 call :GET_PROXY
@@ -117,7 +117,7 @@ if "%locale%"=="ru" (
 	echo Copying Firefox launcher and settings
 )
 mkdir ..\Firefox\App\DefaultData\profile\ > nul
-copy /Y profile\* ..\Firefox\App\DefaultData\profile\ > nul
+xcopy /E /Y profile\* ..\Firefox\App\DefaultData\profile\ > nul
 if "%locale%"=="ru" (
 	copy /Y profile-ru\* ..\Firefox\App\DefaultData\profile\ > nul
 ) else (
diff --git a/windows/build/profile/cert9.db b/windows/build/profile/cert9.db
index bcc5421..f5ccea3 100644
Binary files a/windows/build/profile/cert9.db and b/windows/build/profile/cert9.db differ
diff --git a/windows/build/profile/certificates/purplei2p_ca.pem b/windows/build/profile/certificates/purplei2p_ca.pem
index bbbcc77..a750237 100644
--- a/windows/build/profile/certificates/purplei2p_ca.pem
+++ b/windows/build/profile/certificates/purplei2p_ca.pem
@@ -1,23 +1,24 @@
 -----BEGIN CERTIFICATE-----
-MIID7DCCAtSgAwIBAgIJAKXaTovgoTIUMA0GCSqGSIb3DQEBCwUAMIGCMQswCQYD
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 -----END CERTIFICATE-----