diff --git a/debian/changelog b/debian/changelog
index 39e8915b..765c994f 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+llvm-toolchain-13 (1:13.0.0-2) unstable; urgency=medium
+
+  * Fix the libclang detection in cmake
+    (Closes: #994827)
+
+ -- Sylvestre Ledru <sylvestre@debian.org>  Sun, 03 Oct 2021 22:38:18 +0200
+
 llvm-toolchain-13 (1:13.0.0-1) unstable; urgency=medium
 
   * New upstream release
diff --git a/debian/qualify-clang.sh b/debian/qualify-clang.sh
index 1f845cd1..c62f3702 100755
--- a/debian/qualify-clang.sh
+++ b/debian/qualify-clang.sh
@@ -1418,6 +1418,17 @@ mkdir cmaketest/foo/
 rm -rf cmaketest
 
 
+# Test case for bug #994827
+rm -rf cmaketest && mkdir cmaketest
+cat > cmaketest/CMakeLists.txt <<EOF
+cmake_minimum_required(VERSION 3.18)
+project(testllvm)
+
+find_package(Clang REQUIRED CONFIG HINTS "/usr/lib/llvm-${LLVM_VERSION}/lib/cmake/clang/")
+EOF
+mkdir cmaketest/foo/
+(cd cmaketest/foo && cmake .. > /dev/null)
+rm -rf cmaketest
 
 
 CLANG=clang-$VERSION
diff --git a/debian/rules b/debian/rules
index 805f41ad..fdcf2070 100755
--- a/debian/rules
+++ b/debian/rules
@@ -761,6 +761,9 @@ endif
 # Disable CMake's package validation checks for binaries that may not be installed
 	sed -i 's|.*_IMPORT_CHECK_FILES_FOR_.*/bin/.*)|#&|' $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/cmake/clang/ClangTargets-*.cmake
 
+# Adjust to the existing symlink. See #994827
+	sed -i "s|libclang-$(LLVM_VERSION).so.$(LLVM_VERSION).*\"|libclang-$(LLVM_VERSION).so.1\"|" $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/cmake/clang/ClangTargets-relwithdebinfo.cmake
+
 # Managed in python*-lldb-X.Y.links.in
 	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/python*/*-packages/lldb/_lldb.so