OPINION
¶ 1 The question in this ease is whether a defendant convicted of possessing methamphetamine for sale who has two non-methamphetamine-related historical prior felony convictions was properly sentenced under Arizona’s general repetitive offender statute rather than a statute applicable to certain methamphetamine-related offenses. We hold that the methamphetamine sentencing statute does not prohibit the trial court from enhancing the sentence of a defendant who has non-methamphetamine-related historical prior convictions under the general repetitive offender statute.
I. FACTUAL AND PROCEDURAL BACKGROUND
¶ 2 In 2007, Daniel Diaz was convicted of possessing methamphetamine for sale. He admitted that he was on felony probation when the offense occurred and had two historical prior felony convictions, neither of which involved methamphetamine.
¶3 Diaz claimed that he should be sentenced under Arizona Revised Statutes *323 (A.R.S.) § 13-709.03 (2010), 1 a special sentencing statute applicable to certain drug offenses including possession of methamphetamine for sale. The trial court instead sentenced Diaz under A.R.S. § 13-703(C) (2010), the general statute applicable to repetitive offenders, to an aggravated term of twenty-five years.
¶ 4 Diaz appealed. The court of appeals affirmed his conviction, but remanded for resentencing, finding that the trial court applied the wrong sentencing statute.
State v. Diaz,
¶ 5 We granted review because interpretation of our criminal sentencing statutes is a recurring issue of statewide importance. We have jurisdiction pursuant to Article 6, Section 5(3) of the Arizona Constitution, and A.R.S. § 12-120.24 (2003).
II. DISCUSSION
¶ 6 Diaz was convicted of “knowingly ... [p]ossess[ing] a dangerous drug for sale,” a class two felony. A.R.S. § 13-3407(A)(2) (2010) (possession for sale); id. § (B)(2) (class two felony). Section 13-3407(E) provides that any person convicted of selling methamphetamine “shall be sentenced pursuant to § 13-709.03, subsections A or B.”
¶ 7 Section 13-709.03(A), the provision applicable to a first-time offender who possesses methamphetamine for sale, doubles the five-year term generally applicable to possession-for-sale offenses if the drug involved is not methamphetamine. It provides that one convicted of possessing methamphetamine for sale “shall be sentenced” to a presumptive term of ten calendar years, which may be mitigated or aggravated by up to five years. Compare A.R.S. § 13-702(D) (2010) (listing five-year term as the presumptive sentence for a first-time offender convicted of a class two felony), with A.R.S. § 13-709.03(A) (listing ten-year term as the presumptive sentence for possession of methamphetamine for sale). Section 13-709.03(B) provides an enhanced sentence for defendants convicted of possessing methamphetamine for sale who have “previously been convicted of [certain drug-related offenses specified in A.R.S. § 13-3407] involving methamphetamine” — that is, it increases the sentence for defendants convicted of possessing methamphetamine for sale if they also have certain methamphetamine-related priors. 2
¶8 Diaz contends that because the State elected to chai’ge him with a methamphetamine-related offense, it was required to sentence him under the sentencing scheme set forth in A.R.S. § 13-3407(E) and § 13-709.03, and, as a result, the maximum sentence he could receive was an aggravated sentence of fifteen years under § 13-709.03(A).
¶ 9 The State, on the other hand, maintains that the trial court properly sentenced Diaz under A.R.S. § 13-703(C) and (J), which govern sentencing for repetitive offenders who have two or more prior historical felony convictions. See A.R.S. § 13-105(22) (defining historical prior felony conviction). Under § 13-703(J), the presumptive class two felony sentence for a repetitive offender who has *324 two or more prior felony convictions is 15.75 years, which may be aggravated up to 35 years. Section 13-703(N) requires that “[t]he penalties prescribed by this section shall be substituted for the penalties otherwise authorized by law if an allegation of prior conviction is charged in the indictment or information and admitted or found by the court.” Diaz does not contest that the State properly alleged that he had prior historical felony convictions and, at sentencing, he admitted having two such convictions.
¶ 10 Thus, we are faced with allegedly conflicting statutory sentencing provisions, both of which contain the directory language “shall.” We review this statutory interpretation issue de novo.
State v. Gomez,
¶ 11 Diaz does not'dispute that he could be sentenced to an aggravated term of fifteen years under § 13-709.03(A) for the possession-for-sale conviction. He contends, however, that because the State charged him under § 13-3407, the court was required to sentence him only under § 13-709.03. See § 13-3407(E) (providing that a person convicted of particular methamphetamine offenses “shall be sentenced pursuant to § 13-709.03”). This statutory language, Diaz claims, precludes application of the repetitive offender provisions of § 13-703 to him regardless of his prior criminal history. He correctly observes that the repetitive offender provision in § 13-709.03(B) does not apply to him because he has not been convicted of a previous drug offense “involving methamphetamine.”
¶ 12 The State, on the other hand, maintains that the court may use Diaz’s prior non-methamphetamine-related convictions to enhance his sentence under § 13-703 because no language in § 13-709.03 expressly precludes such a result. Doing so, the State argues, furthers the legislative policy of punishing repeat offenders more severely than those who have committed no prior offenses.
¶ 13 We agree with the State. Section 13-709.03(B) does not address prior convictions for non-methamphetamine-related offenses, and no other language in that statute precludes the application of the general repetitive offender sentencing provision.
See State v. Laughter,
¶ 14 We find instructive the analysis in
Tarango,
¶ 15 The statute we construed in
Tarango,
the predecessor of § 13-703(N), similarly provided that the “penalties prescribed by this section shall be substituted for the penalties otherwise authorized by law” if the defendant’s prior convictions are properly charged and admitted by the defendant or found by the trier of fact.
Id.
at 209,
¶ 16 The same remains true today. We therefore hold that, absent an express exclu *325 sion m a separate provision of our statutory sentencing scheme, the State may pursue enhanced penalties against a repetitive offender under A.R.S. § 13-703.
¶ 17 This result harmonizes provisions in our statutory scheme, comports with our ease law, and supports the legislature’s determination that repeat offenders should suffer harsher penalties than first-time offenders.
See State v. Sweet,
III. CONCLUSION
¶ 18 For the reasons above, we vacate ¶¶ 7-14 of the court of appeals’ opinion and affirm the sentence imposed on Diaz by the trial court.
Notes
. We apply the substantive law that was in effect when Diaz committed the offense.
See
A.R.S. § 1-246 (2002);
State v. Newton,
. In addition to increasing the penalty for those who have prior methamphetamine-related convictions, § 13-709.03(13) also extends the time a prior methamphetamine-related offense may be used to enhance a sentence. Section 13-709.03(B) permits the use of a previous conviction for a violation of § 13-3407 regardless of how long before the current offense the previous conviction occurred. Our repetitive offender sentencing scheme, in contrast, generally permits use of a prior class two felony conviction only if committed within the preceding ten years. A.R.S. § 13-105(22)(b) (2010).
