diff --git a/extra/kalzium/PKGBUILD b/extra/kalzium/PKGBUILD
index 26cf8294b..c4a0a0271 100644
--- a/extra/kalzium/PKGBUILD
+++ b/extra/kalzium/PKGBUILD
@@ -6,7 +6,7 @@
 #  - drop avogadrolibs depend for now: GL-only
 
 pkgname=kalzium
-pkgver=17.04.2
+pkgver=17.04.3
 pkgrel=1
 pkgdesc="Periodic Table of Elements"
 url="https://kde.org/applications/education/kalzium/"
@@ -18,9 +18,10 @@ conflicts=(kdeedu-kalzium)
 replaces=(kdeedu-kalzium)
 groups=(kde-applications kdeedu)
 source=("https://download.kde.org/stable/applications/$pkgver/src/$pkgname-$pkgver.tar.xz"{,.sig})
-sha256sums=('06a82b071143b7a834b797fa32c479e4abe8b096c3023c0a9e0954ff96ad933d'
+sha256sums=('8dfe48d336d746cfc2387d67c5bcb921f9ea4dea1c0231864f7dcd87c35a9d5f'
             'SKIP')
-validpgpkeys=(CA262C6C83DE4D2FB28A332A3A6A4DB839EAA6D7) # Albert Astals Cid <aacid@kde.org>
+validpgpkeys=(CA262C6C83DE4D2FB28A332A3A6A4DB839EAA6D7  # Albert Astals Cid <aacid@kde.org>
+              F23275E4BF10AFC1DF6914A6DBD2CE893E2D1C87) # Christoph Feck <cfeck@kde.org>
 
 prepare() {
   mkdir -p build