diff --git a/extra/opencascade/.SRCINFO b/extra/opencascade/.SRCINFO
index 5dcef5e82..c93fdc495 100644
--- a/extra/opencascade/.SRCINFO
+++ b/extra/opencascade/.SRCINFO
@@ -1,7 +1,7 @@
 pkgbase = opencascade
 	pkgdesc = SDK intended for development of applications dealing with 3D CAD data
-	pkgver = 7.7.2
-	pkgrel = 6
+	pkgver = 7.8.1
+	pkgrel = 1
 	epoch = 1
 	url = https://www.opencascade.org
 	arch = x86_64
@@ -30,15 +30,15 @@ pkgbase = opencascade
 	depends = gl2ps
 	depends = tk
 	depends = vtk
-	source = opencascade::git+https://git.dev.opencascade.org/repos/occt.git#commit=cec1ecd0c9f3b3d2572c47035d11949e8dfa85e2
+	source = opencascade::git+https://git.dev.opencascade.org/repos/occt.git#tag=V7_8_1
 	source = opencascade.sh
 	source = fix-cmake-variable.patch
 	source = skip-license-installation.patch
-	sha512sums = SKIP
+	sha512sums = 6bb3f705aacb20970e6f97d0758baf6ce1a9330b00515a12706f6383f3c75291720e9e2592f4dd795f7da33df233de75066a56fff0663482f69818cbe6cdec9f
 	sha512sums = a7516028e55fd303dc1cfb61b75c9cb209d431d854b4d1c58f9c19df8ecee9d79da5c8745676c68a2de0980652de4c4d1c5a927c25db1e5146fb1f1f43c5906b
 	sha512sums = ad6ce2f52462989bd990b52fd5428f3e5cbd4fb15c38d92c0e0954e6afc3368fca961b92efead8e8957213352fb87a469e1bfaccaf14b484351acc0a0bc10485
 	sha512sums = 86e6502c92cbb8c2736cdeaf25b2ea39b87a650e490e042d6d86c2d67d310ef4ee2050108228ff776061603840ec0aa74e534270fb5c53585475de715212c5fa
-	b2sums = SKIP
+	b2sums = 1d2698c6b189478440997171c9af9ac27cbbaaaf748276581e81f66a86a89132c4f4748f86d9d60c53c7d2cb6f1fde94be0b3959b754c6580c82cc3256e8e8ab
 	b2sums = da9db038ed2348d2d7736505eda2f40fe52c836bcedb74d9f369cc53f7d40a330bd87d6aedd773863745cd46e4dbe5876acda2d2d60177f00d5db9cae4f1f102
 	b2sums = bb98b2b53a9a97ae15a353a9dbcc6d92a97ddaa56af0610cefe9de3a4b84c4a6021d9396f7e270c1d379278df069dbf90f9771db64947e52d38ad36bc3c6f913
 	b2sums = 7562ce632b9a0db7faba4f373de5f108b27395a4dd62721711a7cd1f519c44348a1df5c6834e7691072abbdcef66365fc9245dee8775c51d122e0455874f8236
diff --git a/extra/opencascade/PKGBUILD b/extra/opencascade/PKGBUILD
index 63a8694ae..fb29cdf13 100644
--- a/extra/opencascade/PKGBUILD
+++ b/extra/opencascade/PKGBUILD
@@ -10,8 +10,8 @@
 #  - removed makedepends on adios2
 
 pkgname=opencascade
-pkgver=7.7.2
-pkgrel=6
+pkgver=7.8.1
+pkgrel=1
 epoch=1
 pkgdesc='SDK intended for development of applications dealing with 3D CAD data'
 arch=('x86_64')
@@ -43,18 +43,17 @@ makedepends=(
   'unixodbc'
   'utf8cpp'
 )
-_commit='cec1ecd0c9f3b3d2572c47035d11949e8dfa85e2'
 source=(
-  "$pkgname::git+https://git.dev.opencascade.org/repos/occt.git#commit=$_commit"
+  "$pkgname::git+https://git.dev.opencascade.org/repos/occt.git#tag=V${pkgver//./_}"
   'opencascade.sh'
   'fix-cmake-variable.patch'
   'skip-license-installation.patch'
 )
-sha512sums=('SKIP'
+sha512sums=('6bb3f705aacb20970e6f97d0758baf6ce1a9330b00515a12706f6383f3c75291720e9e2592f4dd795f7da33df233de75066a56fff0663482f69818cbe6cdec9f'
             'a7516028e55fd303dc1cfb61b75c9cb209d431d854b4d1c58f9c19df8ecee9d79da5c8745676c68a2de0980652de4c4d1c5a927c25db1e5146fb1f1f43c5906b'
             'ad6ce2f52462989bd990b52fd5428f3e5cbd4fb15c38d92c0e0954e6afc3368fca961b92efead8e8957213352fb87a469e1bfaccaf14b484351acc0a0bc10485'
             '86e6502c92cbb8c2736cdeaf25b2ea39b87a650e490e042d6d86c2d67d310ef4ee2050108228ff776061603840ec0aa74e534270fb5c53585475de715212c5fa')
-b2sums=('SKIP'
+b2sums=('1d2698c6b189478440997171c9af9ac27cbbaaaf748276581e81f66a86a89132c4f4748f86d9d60c53c7d2cb6f1fde94be0b3959b754c6580c82cc3256e8e8ab'
         'da9db038ed2348d2d7736505eda2f40fe52c836bcedb74d9f369cc53f7d40a330bd87d6aedd773863745cd46e4dbe5876acda2d2d60177f00d5db9cae4f1f102'
         'bb98b2b53a9a97ae15a353a9dbcc6d92a97ddaa56af0610cefe9de3a4b84c4a6021d9396f7e270c1d379278df069dbf90f9771db64947e52d38ad36bc3c6f913'
         '7562ce632b9a0db7faba4f373de5f108b27395a4dd62721711a7cd1f519c44348a1df5c6834e7691072abbdcef66365fc9245dee8775c51d122e0455874f8236')
@@ -67,6 +66,8 @@ pkgver() {
 prepare() {
   cd "$pkgname"
 
+  git cherry-pick -n 7236e83dcc1e7284e66dc61e612154617ef715d6
+
   patch -p1 -i ../fix-cmake-variable.patch
   patch -p1 -i ../skip-license-installation.patch
 }