diff --git a/basic/main.fmf b/basic/main.fmf
index b97eb59..f4d96e0 100644
--- a/basic/main.fmf
+++ b/basic/main.fmf
@@ -30,3 +30,7 @@ adjust:
       - llvm-toolset-14.0-clang
       - llvm-toolset-14.0-lld
     when: collection == llvm-toolset-14.0
+  - require+:
+      - llvm-toolset-15.0-clang
+      - llvm-toolset-15.0-lld
+    when: collection == llvm-toolset-15.0
diff --git a/build-gating-alternatives.fmf b/build-gating-alternatives.fmf
index 9ca8c6d..0d52a79 100644
--- a/build-gating-alternatives.fmf
+++ b/build-gating-alternatives.fmf
@@ -31,6 +31,10 @@ adjust:
     environment+:
       WITH_SCL: "scl enable llvm-toolset-14.0"
     when: "collection == llvm-toolset-14.0"
+  - because: "When testing SCL-ized LLVM, the collection must be enabled first"
+    environment+:
+      WITH_SCL: "scl enable llvm-toolset-15.0"
+    when: "collection == llvm-toolset-15.0"
 
 discover:
     - name: lld-tests
diff --git a/build-gating.fmf b/build-gating.fmf
index b22513f..e67f5a8 100644
--- a/build-gating.fmf
+++ b/build-gating.fmf
@@ -31,6 +31,10 @@ adjust:
     environment+:
       WITH_SCL: "scl enable llvm-toolset-14.0"
     when: "collection == llvm-toolset-14.0"
+  - because: "When testing SCL-ized LLVM, the collection must be enabled first"
+    environment+:
+      WITH_SCL: "scl enable llvm-toolset-15.0"
+    when: "collection == llvm-toolset-15.0"
 
 discover:
     - name: lld-tests
diff --git a/gcc-compat-basic/main.fmf b/gcc-compat-basic/main.fmf
index c964a6f..f2abfd2 100644
--- a/gcc-compat-basic/main.fmf
+++ b/gcc-compat-basic/main.fmf
@@ -32,3 +32,6 @@ adjust:
   - require+:
       - llvm-toolset-14.0-lld
     when: collection == llvm-toolset-14.0
+  - require+:
+      - llvm-toolset-15.0-lld
+    when: collection == llvm-toolset-15.0
diff --git a/ld-alternative/main.fmf b/ld-alternative/main.fmf
index 4cdfcf7..382ed4e 100644
--- a/ld-alternative/main.fmf
+++ b/ld-alternative/main.fmf
@@ -35,3 +35,6 @@ adjust:
   - require+:
       - llvm-toolset-14.0-lld
     when: collection == llvm-toolset-14.0
+  - require+:
+      - llvm-toolset-15.0-lld
+    when: collection == llvm-toolset-15.0