diff --git a/Common/Constants/include/CommonConstants/PhysicsConstants.h b/Common/Constants/include/CommonConstants/PhysicsConstants.h
index f0198f7a7f61d..c47aa849cb18d 100644
--- a/Common/Constants/include/CommonConstants/PhysicsConstants.h
+++ b/Common/Constants/include/CommonConstants/PhysicsConstants.h
@@ -61,6 +61,8 @@ enum Pdg {
   kJPsi = 443,
   kLambdaB0 = 5122,
   kLambdaCPlus = 4122,
+  kLambdaC2595 = 14122,
+  kLambdaC2625 = 4124,
   kOmegaC0 = 4332,
   kK0Star892 = 313,
   kKPlusStar892 = 323,
@@ -123,6 +125,8 @@ constexpr double MassChiC1 = 3.51067;
 constexpr double MassJPsi = 3.0969;
 constexpr double MassLambdaB0 = 5.6196;
 constexpr double MassLambdaCPlus = 2.28646;
+constexpr double MassLambdaC2595 = 2.59225;
+constexpr double MassLambdaCP625 = 2.62800;
 constexpr double MassOmegaC0 = 2.6952;
 constexpr double MassK0Star892 = 0.89555;
 constexpr double MassKPlusStar892 = 0.89167;
diff --git a/Common/Constants/include/CommonConstants/make_pdg_header.py b/Common/Constants/include/CommonConstants/make_pdg_header.py
index ad24d66e2c3a5..501b3dfbdaba3 100755
--- a/Common/Constants/include/CommonConstants/make_pdg_header.py
+++ b/Common/Constants/include/CommonConstants/make_pdg_header.py
@@ -116,6 +116,8 @@ class Pdg(Enum):
     kJPsi = 443
     kLambdaB0 = 5122
     kLambdaCPlus = 4122
+    kLambdaC2595 = 14122
+    kLambdaC2625 = 4124
     kOmegaC0 = 4332
     kK0Star892 = 313
     kKPlusStar892 = 323