diff --git a/tools/toolchains/arm.py b/tools/toolchains/arm.py
index 7d745b438d..12e400552b 100644
--- a/tools/toolchains/arm.py
+++ b/tools/toolchains/arm.py
@@ -41,7 +41,7 @@ class ARM(mbedToolchain):
     SUPPORTED_CORES = ["Cortex-M0", "Cortex-M0+", "Cortex-M3", "Cortex-M4",
                        "Cortex-M4F", "Cortex-M7", "Cortex-M7F", "Cortex-M7FD", "Cortex-A9"]
     ARMCC_RANGE = (LooseVersion("5.06"), LooseVersion("5.07"))
-    ARMCC_VERSION_RE = re.compile("Product: ARM Compiler (\d+.\d+)")
+    ARMCC_VERSION_RE = re.compile("Product: ARM Compiler (\d+\.\d+)")
 
     @staticmethod
     def check_executable():
diff --git a/tools/toolchains/iar.py b/tools/toolchains/iar.py
index 4f066cd0f7..02a38f21a1 100644
--- a/tools/toolchains/iar.py
+++ b/tools/toolchains/iar.py
@@ -30,7 +30,7 @@ class IAR(mbedToolchain):
 
     DIAGNOSTIC_PATTERN = re.compile('"(?P<file>[^"]+)",(?P<line>[\d]+)\s+(?P<severity>Warning|Error|Fatal error)(?P<message>.+)')
     INDEX_PATTERN  = re.compile('(?P<col>\s*)\^')
-    IAR_VERSION_RE = re.compile("IAR ANSI C/C\+\+ Compiler V([0-9]+.[0-9]+)")
+    IAR_VERSION_RE = re.compile("IAR ANSI C/C\+\+ Compiler V(\d+\.\d+)")
     IAR_VERSION = LooseVersion("7.80")
 
     @staticmethod