diff --git a/lisp/calc/calc-units.el b/lisp/calc/calc-units.el
index fba2b9c50fb..2f86d7d0529 100644
--- a/lisp/calc/calc-units.el
+++ b/lisp/calc/calc-units.el
@@ -46,9 +46,9 @@
 ;; Updated November 2018 for the redefinition of the SI
 ;; https://www.bipm.org/en/committees/cg/cgpm/26-2018/resolution-1
 
-;; CODATA values last updated November 2023, using 2018 adjustment:
-;; E. Tiesinga, P. J. Mohr, D. B. Newell, and B. N. Taylor,
-;; Rev. Mod. Phys. 93, 025010 (2021)
+;; CODATA values last updated June 2024, using 2022 adjustment:
+;; P. J. Mohr, E. Tiesinga, D. B. Newell, and B. N. Taylor (2024-05-08),
+;; https://pml.nist.gov/cuu/Constants/
 
 (defvar math-standard-units
   '( ;; Length
@@ -143,8 +143,8 @@
               "31.10347680 g") ;; ESUWM, 1/12 exact value for lbt
     ( ct      "(2/10) g"             "Carat" nil
               "0.2 g") ;; ESUWM
-    ( u       "1.66053906660*10^(-27) kg"    "Unified atomic mass" nil
-              "1.66053906660 10^-27 kg (*)") ;; (approx) CODATA
+    ( u       "1.66053906892*10^(-27) kg"    "Unified atomic mass" nil
+              "1.66053906892 10^-27 kg (*)") ;; (approx) CODATA
 
     ;; Force
     ( N       "m kg/s^2"             "*Newton" )
@@ -281,32 +281,32 @@
     ( μ0      "mu0"                         "Permeability of vacuum")
     ( G       "6.67430*10^(-11) m^3/(kg s^2)"    "Gravitational constant" nil
               "6.67430 10^-11 m^3/(kg s^2) (*)")
-    ( me      "9.1093837015*10^(-31) kg"    "Electron rest mass" nil
-              "9.1093837015 10^-31 kg (*)")
-    ( mp      "1.67262192369*10^(-27) kg"   "Proton rest mass" nil
-              "1.67262192369 10^-27 kg (*)")
-    ( mn      "1.67492749804*10^(-27) kg"   "Neutron rest mass" nil
-              "1.67492749804 10^-27 kg (*)")
+    ( me      "9.1093837139*10^(-31) kg"    "Electron rest mass" nil
+              "9.1093837139 10^-31 kg (*)")
+    ( mp      "1.67262192595*10^(-27) kg"   "Proton rest mass" nil
+              "1.67262192595 10^-27 kg (*)")
+    ( mn      "1.67492750056*10^(-27) kg"   "Neutron rest mass" nil
+              "1.67492750056 10^-27 kg (*)")
     ( mmu     "1.883531627*10^(-28) kg"     "Muon rest mass" nil
               "1.883531627 10^-28 kg (*)")
     ( mμ      "mmu"                         "Muon rest mass" nil
               "1.883531627 10^-28 kg (*)")
-    ( Ryd     "10973731.568160 /m"          "Rydberg constant" nil
-              "10973731.568160 /m (*)")
+    ( Ryd     "10973731.568157 /m"          "Rydberg constant" nil
+              "10973731.568157 /m (*)")
     ( sigma   "2 pi^5 k^4 / (15 h^3 c^2)"   "Stefan-Boltzmann constant")
     ( σ       "sigma"                       "Stefan-Boltzmann constant")
-    ( alpha   "7.2973525693*10^(-3)"        "Fine structure constant" nil
-              "7.2973525693 10^-3 (*)")
+    ( alpha   "7.2973525643*10^(-3)"        "Fine structure constant" nil
+              "7.2973525643 10^-3 (*)")
     ( α       "alpha"                       "Fine structure constant" nil
-              "7.2973525693 10^-3 (*)")
-    ( muB     "9.2740100783*10^(-24) J/T"   "Bohr magneton" nil
-              "9.2740100783 10^-24 J/T (*)")
-    ( muN     "5.0507837461*10^(-27) J/T"   "Nuclear magneton" nil
-              "5.0507837461 10^-27 J/T (*)")
-    ( mue     "-9.2847647043*10^(-24) J/T"  "Electron magnetic moment" nil
-              "-9.2847647043 10^-24 J/T (*)")
-    ( mup     "1.41060679736*10^(-26) J/T"  "Proton magnetic moment" nil
-              "1.41060679736 10^-26 J/T (*)")
+              "7.2973525643 10^-3 (*)")
+    ( muB     "9.2740100657*10^(-24) J/T"   "Bohr magneton" nil
+              "9.2740100657 10^-24 J/T (*)")
+    ( muN     "5.0507837393*10^(-27) J/T"   "Nuclear magneton" nil
+              "5.0507837393 10^-27 J/T (*)")
+    ( mue     "-9.2847646917*10^(-24) J/T"  "Electron magnetic moment" nil
+              "-9.2847646917 10^-24 J/T (*)")
+    ( mup     "1.41060679545*10^(-26) J/T"  "Proton magnetic moment" nil
+              "1.41060679545 10^-26 J/T (*)")
     ( R0      "Nav k"                       "Molar gas constant" )
     ( V0      "R0 273.15 K / 10^5 Pa"       "Standard volume of ideal gas" )
               ;; IUPAC 1982 standard temperature and pressure