diff --git a/clang/lib/Driver/ToolChains/Arch/RISCV.cpp b/clang/lib/Driver/ToolChains/Arch/RISCV.cpp
--- a/clang/lib/Driver/ToolChains/Arch/RISCV.cpp
+++ b/clang/lib/Driver/ToolChains/Arch/RISCV.cpp
@@ -63,7 +63,7 @@
       Ext == "zbs" || Ext == "zbt" || Ext == "zbproposedc")
     return RISCVExtensionVersion{"0", "92"};
   if (Ext == "v")
-    return RISCVExtensionVersion{"0", "9"};
+    return RISCVExtensionVersion{"1", "0"};
   if (Ext == "zfh")
     return RISCVExtensionVersion{"0", "1"};
   return None;
diff --git a/clang/test/Driver/riscv-arch.c b/clang/test/Driver/riscv-arch.c
--- a/clang/test/Driver/riscv-arch.c
+++ b/clang/test/Driver/riscv-arch.c
@@ -380,7 +380,7 @@
 // RV32-EXPERIMENTAL-V-BADVERS: error: invalid arch name 'rv32iv0p1'
 // RV32-EXPERIMENTAL-V-BADVERS: unsupported version number 0.1 for experimental extension
 
-// RUN: %clang -target riscv32-unknown-elf -march=rv32iv0p9 -menable-experimental-extensions -### %s -c 2>&1 | \
+// RUN: %clang -target riscv32-unknown-elf -march=rv32iv1p0 -menable-experimental-extensions -### %s -c 2>&1 | \
 // RUN:   FileCheck -check-prefix=RV32-EXPERIMENTAL-V-GOODVERS %s
 // RV32-EXPERIMENTAL-V-GOODVERS: "-target-feature" "+experimental-v"
 
diff --git a/clang/test/Preprocessor/riscv-target-features.c b/clang/test/Preprocessor/riscv-target-features.c
--- a/clang/test/Preprocessor/riscv-target-features.c
+++ b/clang/test/Preprocessor/riscv-target-features.c
@@ -80,10 +80,10 @@
 // CHECK-DOUBLE-NOT: __riscv_float_abi_single
 
 // RUN: %clang -target riscv32-unknown-linux-gnu -menable-experimental-extensions \
-// RUN:   -march=rv32iv0p9 -x c -E -dM %s \
+// RUN:   -march=rv32iv1p0 -x c -E -dM %s \
 // RUN:   -o - | FileCheck --check-prefix=CHECK-V-EXT %s
 // RUN: %clang -target riscv64-unknown-linux-gnu -menable-experimental-extensions \
-// RUN:   -march=rv64iv0p9 -x c -E -dM %s \
+// RUN:   -march=rv64iv1p0 -x c -E -dM %s \
 // RUN:   -o - | FileCheck --check-prefix=CHECK-V-EXT %s
 // CHECK-V-EXT: __riscv_vector 1
 //