diff --git a/libgcrypt.changes b/libgcrypt.changes
index a4b4595..c8c7d4c 100644
--- a/libgcrypt.changes
+++ b/libgcrypt.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Mon Aug  1 07:27:35 UTC 2022 - Stephan Kulow <coolo@suse.com>
+
+- Fix reproducible build problems:
+   - Do not use %release in binaries (but use SOURCE_DATE_EPOCH)
+   - Fix date call messed up by spec-cleaner
+
 -------------------------------------------------------------------
 Tue Feb  1 11:28:51 UTC 2022 - Pedro Monreal <pmonreal@suse.com>
 
diff --git a/libgcrypt.spec b/libgcrypt.spec
index 56f1f25..65b5a93 100644
--- a/libgcrypt.spec
+++ b/libgcrypt.spec
@@ -179,11 +179,11 @@ understanding of applied cryptography is required to use Libgcrypt.
 %build
 echo building with build_hmac256 set to %{build_hmac256}
 autoreconf -fi
-date=$(date -u +%{Y}-%{m}-%{dT}%{H}:%{M}+0000 -r %{SOURCE99})
+date=$(date -u '+%%Y-%%m-%%dT%%H:%%M+0000' -r %{SOURCE99})
 sed -e "s,BUILD_TIMESTAMP=.*,BUILD_TIMESTAMP=$date," -i configure
 export CFLAGS="%{optflags} $(getconf LFS_CFLAGS)"
 %configure \
-           --with-fips-module-version="Libgcrypt version %{version}-%{release}" \
+           --with-fips-module-version="Libgcrypt version %{version}-$SOURCE_DATE_EPOCH" \
            --enable-noexecstack \
            --disable-static \
            --enable-m-guard \