diff --git a/gnu/packages/gnuzilla.scm b/gnu/packages/gnuzilla.scm
index 65e79f4ef1..fa18f2927c 100644
--- a/gnu/packages/gnuzilla.scm
+++ b/gnu/packages/gnuzilla.scm
@@ -556,8 +556,8 @@ (define* (computed-origin-method gexp-promise hash-algo hash
                       #:system system
                       #:guile-for-build guile)))
 
-(define %icecat-version "68.11.0-guix0-preview1")
-(define %icecat-build-id "20200728000000") ;must be of the form YYYYMMDDhhmmss
+(define %icecat-version "68.12.0-guix0-preview1")
+(define %icecat-build-id "20200825000000") ;must be of the form YYYYMMDDhhmmss
 
 ;; 'icecat-source' is a "computed" origin that generates an IceCat tarball
 ;; from the corresponding upstream Firefox ESR tarball, using the 'makeicecat'
@@ -579,11 +579,11 @@ (define icecat-source
                   "firefox-" upstream-firefox-version ".source.tar.xz"))
             (sha256
              (base32
-              "0q11dmfz59a11xgwy5sdc6x89xvb8lkm51lr8yvqb9qvmz5gghci"))))
+              "1k17pi4zh9hrvkzbw4rzzw879a15hpvwriylp75wl22rl7r2nsdf"))))
 
-         (upstream-icecat-base-version "68.11.0") ; maybe older than base-version
+         (upstream-icecat-base-version "68.12.0") ; maybe older than base-version
          ;;(gnuzilla-commit (string-append "v" upstream-icecat-base-version))
-         (gnuzilla-commit "ac907e0c0f5b8896da34d31594b168e60983bec8")
+         (gnuzilla-commit "15a7c3d991a670b6489d4f432b52a188358f4ca5")
          (gnuzilla-source
           (origin
             (method git-fetch)
@@ -595,7 +595,7 @@ (define icecat-source
                                       (string-take gnuzilla-commit 8)))
             (sha256
              (base32
-              "1n2sdf48s5xwcaf69v7yqvas069ficqnfk6nf0kqvd87vryb7182"))))
+              "0n7p067yay413iy0gzprz0xrdkcxj5f8ywhkcghhhzw1nwajckba"))))
 
          (makeicecat-patch
           (local-file (search-patch "icecat-makeicecat.patch")))
diff --git a/gnu/packages/patches/icecat-makeicecat.patch b/gnu/packages/patches/icecat-makeicecat.patch
index 521166b0fc..265725ce36 100644
--- a/gnu/packages/patches/icecat-makeicecat.patch
+++ b/gnu/packages/patches/icecat-makeicecat.patch
@@ -25,7 +25,7 @@ index 8be2362..48716f2 100755
 -wget -N https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/${FFVERSION}esr/source/firefox-${FFVERSION}esr.source.tar.xz.asc
 -gpg --recv-keys --keyserver keyserver.ubuntu.com 14F26682D0916CDD81E37B6D61B7B526D98F0353
 -gpg --verify firefox-${FFVERSION}esr.source.tar.xz.asc
--echo -n 91c1f7caaf1ba785b74799865227456bf784ba614d17cf5f0f41a5f25d6d2160 firefox-${FFVERSION}esr.source.tar.xz |sha256sum -c -
+-echo -n ae692bf2a15908cacbb9d4c7ccf78525a87410ff3f13befedc1926f849bc27cc firefox-${FFVERSION}esr.source.tar.xz |sha256sum -c -
 -
 -echo Extracting Firefox tarball
 -tar -xf firefox-${FFVERSION}esr.source.tar.xz
@@ -37,7 +37,7 @@ index 8be2362..48716f2 100755
 +# wget -N https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/${FFVERSION}esr/source/firefox-${FFVERSION}esr.source.tar.xz.asc
 +# gpg --recv-keys --keyserver keyserver.ubuntu.com 14F26682D0916CDD81E37B6D61B7B526D98F0353
 +# gpg --verify firefox-${FFVERSION}esr.source.tar.xz.asc
-+# echo -n 91c1f7caaf1ba785b74799865227456bf784ba614d17cf5f0f41a5f25d6d2160 firefox-${FFVERSION}esr.source.tar.xz |sha256sum -c -
++# echo -n ae692bf2a15908cacbb9d4c7ccf78525a87410ff3f13befedc1926f849bc27cc firefox-${FFVERSION}esr.source.tar.xz |sha256sum -c -
 +# 
 +# echo Extracting Firefox tarball
 +# tar -xf firefox-${FFVERSION}esr.source.tar.xz